How to test gold with ammonia

Algorithm and rules for testing gold using iodine

In this article:

• Iodine Test Procedure
• How to clean a product from iodine stains?

In the modern world, gold still remains as valuable as it was many years ago. Therefore, it is not surprising that many fake gold products appear. To avoid getting into an unpleasant situation when they sell you a fake instead of precious metal, you need to be able to check the authenticity of gold. This can be done even at home using improvised means. For those who like to purchase gold items, it would be useful to learn how to test gold with iodine.

Iodine Test Procedure

You probably have this drug at home. In any case, you can buy it at the pharmacy; iodine is freely available. In medicine, it acts as an antiseptic, but in jewelry, iodine plays the role of an indicator of authenticity. Only gold can be tested with iodine; this procedure is useless with other metals.

Iodine

If you are interested in authentication in this way, then buy the drug and get ready to carry out several simple manipulations, during which you will find out whether it is gold or not:

• Take a gold item. It doesn’t matter how long ago it was made or how long ago it was cleaned. The 585 and 583 samples are most often checked for authenticity, since the appearance of such jewelry may have a reddish tint and people doubt the authenticity of the jewelry. The tint appears due to the large amount of ligature in the alloy.
• Next, you need to lightly sand the product on its inside. It is enough to slightly remove the top layer to obtain a reaction with iodine in the future. This can be done using any abrasive; it is best to rub the product with sandpaper.
• Using a cotton swab, drop iodine onto the gold or simply apply the substance to the jewelry in the wiped area. The reaction does not depend on the size of this place, so try to make it as small and inconspicuous as possible. If you apply more iodine to the item, the reaction will not become more pronounced, and you will then have to wash the iodine off the jewelry.
• Monitor the product's reaction. If a dark spot appears on it, this means that the product is genuine, made of precious metal, and the gold test was successful. But if there is no reaction, it means you have copper, bronze or brass in your hands. The origin of the chemical reaction is explained by the fact that gold reacts with halogens, which is iodine.

Apply a drop of iodine to a gold ring

In addition to iodine, you can check the authenticity of gold at home using the following substances:

• vinegar;
• lapis pencil;
• magnet.

Many people know how to determine gold with these substances, so if iodine is missing, it is easy to find an alternative in the form of other testing methods.

How to clean a product from iodine stains?

Some more questions arise later, after checking for authenticity. Of particular interest is the question of how to purify gold from iodine? The fact is that iodine leaves traces on the product in the form of dark spots. The size of the spot depends on the amount of iodine applied during testing. But getting rid of them is not difficult, but you will definitely be sure that you are holding real gold in your hands and not other alloys.

An iodine stain will disappear on its own over time, especially if it is small, but sometimes it needs to be erased faster. To do this, there are several methods that allow you to remove stains on gold and clean the product as a whole:

• Weak solutions with powder or soap will not help, since the stain is quite resistant to them.
• Use hyposulfite as a cleaner. This substance, which is used when developing photographs using the old method, is also called a fixer. Method for preparing the solution: 1 tablespoon of fixative per glass of warm water. The product should be kept in the solution for half an hour, after which it should be rinsed under water and dried.
• A solution with ammonia can also get rid of the problem. But keep in mind that the method may not always work, and besides, the smell of ammonia will disappear within three days. Therefore, this technique will not help solve the question of how to purify gold from iodine in a short time.
• The oldest cleaning method is to mix 80 grams of lime with 70 grams of soda and 20 grams of salt. This powder is diluted in 1 liter of warm water; the decoration should be kept in the solution for about an hour and a half.

Testing gold with iodine is only suitable if the product is made of a solid metal alloy. If the jewelry is gilded, then the test will also be positive if you do not completely erase the gilding layer. Or you may simply damage the product, after which you will have to order a repeat gilding procedure from the jeweler. Therefore, before checking, look at the product tag or do not take risks, but simply take the ring to the master.

It is best to carry out the cleaning procedure at a jeweler. You can also carry out the verification procedure there. Of course, home methods are cheaper, but they are more labor-intensive and unreliable.

If you want to confirm the authenticity of gold in a product, you should contact a jewelry workshop and ask to determine the type of metal and even the fineness of the alloy. This can be resolved in a few minutes. Previously, cuts and cuts were made on the wrong side of the product.

But now the devices determine all indicators without interfering with the integrity of the product. This is done by determining the density of the metal and chemical reactions.

After completing the procedure, you will receive a document confirming the presence or absence of gold in the product.

Source: https://HochuZoloto.com/prochee/kak-yodom-proverit-zoloto.html

Tips for testing gold with iodine

Testing gold with iodine is a fairly well-known method of testing gold items for originality and authenticity. But as a result of the use of this technique, the question often arises of how to purify gold from iodine. Despite the need for cleaning, the popular technique does not disappoint. After all, the increasing number of cases of deceptive quality of gold products being offered is worrying buyers more and more often.

Even Archimedes, who lived before our era, more than once tried to solve the problem of testing the gold on his crown to find out whether it was genuine. This task remains significant today. With the use of modern technology, precious gold metal is becoming not so difficult to counterfeit.

Meanwhile, the price of gold products is rising. Therefore, when you buy gold jewelry, you want to be sure that it is not a fake.

At home, it is impossible to verify the authenticity of the metal one hundred percent, but there are simple checks that will reduce the possibility of a case where gold jewelry may be fake.

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Methods for testing gold for authenticity

Today, questions about how to test gold for authenticity and with what materials this can be done are the most popular and significant. There are several simple ways to perform gold quality testing:

1. Magnet. If the product is fake or low quality, it will stick to a powerful magnet. This procedure can also be carried out at home. However, copper and aluminum are not magnetic, so it is possible to fake gold from them.
2. Lapis pencil (used for cauterizing wounds). By soaking the jewelry in water and drawing a small stripe where it was soaked, you can check the authenticity of the gold. After this, you should wipe the place where the line was placed with cotton wool. If a trace remains, then the product is most likely fake. For a more in-depth inspection, in a place where it will not be very noticeable, it is necessary to scratch or file the product. In this case, it is possible to recognize the authenticity of the jewelry both on the surface and inside.
3. Vinegar. Another simple method for determining the authenticity of gold at home. You should soak the decoration in vinegar for a few minutes. If it does not darken, then the gold is real, otherwise it is fake.
4. Using unfired ceramic tiles. If you run any metal over such a tile, you will see that a mark will remain. Now you can check the authenticity of the gold. After it, the line should be gold, but if it is another metal, then it should be black or gray.
5. Iodine. Yod is a universal whistleblower. With its help, you can find out the authenticity of not only gold, but also, for example, honey. Testing gold with iodine does not take much time. Unfortunately, even if you buy a product in a store, you cannot always be completely sure that the stamp assigned corresponds to the sample. It is possible to test gold at home.

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Samples 583 and 585: testing instructions

The most popular gold samples in Russia are 585 and 583, the alloys of which are distinguished by the presence of a reddish-orange hue. In Europe, 750 gold with a yellowish tint is widespread. In order to check gold for the authenticity of 583 and 585 samples, it is recommended to perform the following procedure:

1. Iodine must be used.
2. The surface of any piece of jewelry should be lightly sanded in an inconspicuous place with sandpaper.
3. Lubricate the surface of the sanded area with iodine.
4. In this case, it is recommended to monitor what chemical reaction will occur between the iodide reagent and gold.
5. If a dark spot remains on the area of ​​gold that has been worn, then the jewelry is genuine and made from 585-karat alloy.
6. If there are no dark spots, then the tested jewelry only looks like gold in appearance. These can be metals such as bronze, copper, brass.

Testing gold with iodine is the most common method of gold testing procedure. It is very simple and is mainly intended for non-professional beginners who understand little about gold hallmarks.

How to check gold for authenticity? There are many more ways: using various acids, various analyzes of product chips. But it is better to entrust these checks to a professional.

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Purification of gold from iodine

Since iodine reacts with copper, the fake will quickly change color

In the case when gold is tested with iodine, but a dark stain remains on the product, which is not so easy to wash off, the help of a proven technique will be required. A soap solution will definitely not help in this case, so removing stains of this kind requires a special approach. There are several ways to perform the cleansing procedure at home.

Using hyposulfite, which is usually used as a fixative (when developing photographs). It is usually sold in pharmacies or in stores for amateur photographers (which is less common now).

Sequencing:

• prepare a solution: dilute 1 tbsp in one glass of water. l. hyposulfite solution;
• the product is immersed in the resulting solution for half an hour;
• after the required time, the decoration is washed with water;
• wipe the decoration with a flannel cloth;
• iodine, reacting with gold, remains on the surface.

It is not always possible to remove iodine from gold using ammonia, but it is worth a try. You can soak a chain or ring in ammonia, or you can make a soap solution with it. After shaking them well in this solution, remove them and rinse under running water.

This method should be used carefully if the ring contains gems. Soap solution is harmful for jewelry containing pearls, turquoise, and corals.

You can resort to the most ancient method of purifying gold from iodine. To do this you should:

• Mix 70 g of bicarbonate of soda, 80 g of bleaching lime, 20 g of sodium chloride and dissolve in 1 liter of water;
• the solution must be heated;
• put the gold into the solution;
• as soon as the stains disappear, rinse the product with water;
• wet a soft cloth with alcohol and wipe the jewelry with it.

If these methods do not help and the issue remains unresolved, then it should be resolved with the help of consultation or the help of a jeweler.

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Removing dirt and nasty stains from gold jewelry

Over time, all gold products fade, become covered with a greasy film and stains, which deteriorates their noble appearance. Therefore, it is worth thinking about how to clean gold from dirt and stains in order to give it its original shine. There are a number of recommendations and tips for quickly and efficiently removing unpleasant plaque or dirt. The main options are:

1. To add shine, you should resort to ethyl alcohol, moistening a piece of soft cloth in it.
2. If the decoration is not very dirty, then soak it for half an hour in a solution of 1 tbsp. l. washing powder and 1 glass of water. Then rinse thoroughly.
3. For jewelry that is heavily soiled, prepare a mixture: 1 ampoule of hydrogen peroxide, 1 ampoule of ammonia, 1 tsp. washing powder and a glass of water. Soak the gold for no more than five minutes and rinse with water.

Checked and cleaned jewelry will delight you with its shine, radiance and beauty.

Source: https://grammzolota.ru/vidy/proverka-yodom-ochistit-domashnih-usloviyah.html

How to test gold at home for authenticity - with iodine, vinegar

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Gold products have always had a high cost and were in great demand. They are traditionally viewed as reliable investments that are not subject to inflation. The value of gold jewelry consists of artistic and historical values ​​(only highly qualified experts can determine them), as well as the direct “metal” value, which depends on the purity and weight. How to check gold for authenticity – we’ll talk in this article.

This is what the standard gold and foreign exchange reserves of many families look like

Before figuring out how to test gold, you first need to understand a little about what it is, how it is marked, and how it differs in type and properties in the compositions of different alloys.

A few words about gold, hallmarks and alloys

Gold belongs to the group of noble (precious) metals. According to its physical characteristics, it is soft and plastic, subject to deformation and rapid abrasion, and it is expensive, so gold in its pure form is not used for the production of jewelry. It is included in alloys with other metals, which give products strength and wear resistance. The percentage of gold in alloys is called fineness.

The noble shine of gold attracts and fascinates, which gives reason to agree with the opinion about certain magical properties of this metal

When talking about gold products, we most often mean the 585th or 750th standard, which contain 58.5 and 75% pure gold according to GOST, respectively. Along with it, the alloys also contain other metals, which are generally called alloys. It can consist of copper, silver, nickel, palladium, platinum and other metals in various combinations and proportions, which provides gold products with a variety of colors and shades, including the so-called “rose” or “white” gold.

The hallmark must be present on the inside of gold jewelry in the form of a printed imprint with the corresponding number (375, 585, 750, 999) next to the factory or author's mark.

The sample serves as a government guarantee confirming quality, and is one of the ways to check gold visually

Examine carefully under a magnifying glass the design of the mark and the hallmark numbers - on a quality product they should be clear, even, and clearly distinguishable. If there are grounds for doubt, compare the design with stamps and samples on other jewelry of which you are confident.

If there are a large number of counterfeits (even in the official jewelry trade), when buying gold items in a store, pawnshop, and even more so “from hand,” you need to know about other possibilities for checking gold for authenticity.

How to test gold at home

We must immediately admit that the task of testing gold at home is quite complex and does not always guarantee a reliable result. In some cases, an outright fake can be detected by hearing, eye, smell and “tooth.”

If you bite into real gold, it should leave a dented mark from your teeth. The higher the purity, that is, the percentage of gold content in the product, the softer it is.

To protect your teeth, you can try running a gold piece with force across the glass. Gold will not leave a mark, but harder metals, if they predominate in the composition, will create a scratch.

By eye , or better yet, using the same magnifying glass, you need to carefully examine the joints at the junctions of parts, weaving links, and insertion of stones. On gold products, the areas where the elements join will be distinguished by a brighter soldering color.

Soldering is done with gold of a higher standard, which melts easier and faster. It may differ slightly in color from the main alloy

If you are not afraid of damaging the product, then lightly file the surface with a file. Also, instead of a file, you can take any sharp object and scratch the product with it somewhere in an inconspicuous place on the inside. For fakes, only covered with a thin layer of gold, the color underneath will be darker.

You can check a ring, pendant, bracelet or other jewelry made of solid metal by sound . Those who have a keen ear will be able to distinguish well the ringing and clear sound that gold produces from the dull, rattling sound characteristic of base metals. For this method of testing, a gold item must be thrown from a small height onto a hard glass surface, for example, into a wide glass.

All home experiments on the topic of how to test gold are more reliably carried out in comparison with “experimental” samples - products made of other metals or gold ones that do not raise doubts.

If you want to know how to test gold by smell , then hold it between your palms and rub. Various metals (even silver) will leave a characteristic odor on the skin, but gold, as a metal that does not react with most substances, should not smell.

Gold does not leave any odor on your hands even with intense rubbing, as it is not subject to oxidation.

The presence of iron and other metals in counterfeits, taking into account their physical properties, can be determined using improvised means. For example, a powerful magnet will attract iron to itself, but not gold. If you throw gold jewelry into a glass of water , it will quickly sink to the bottom, and lighter metals can sink much longer.

Chemistry to help us

Since gold practically does not oxidize, to verify its authenticity, either acids that react with other metals or iodine are used.

One of the very few chemicals that gold reacts to in contact with is commonplace iodine, which is found in any home medicine cabinet.

Those who are ready to use the method: how to test gold with iodine need to be very careful, since iodine should lead to a reaction with gold - a change in color and the appearance of a stain at the test site.

Therefore, a small rub with a file or sandpaper is made on an inconspicuous area on the inside to remove the outer layer of gold plating. Iodine is dripped onto the area exposed by the file and held for literally 1 minute, after which it is wiped with a cotton swab or soft cloth.

There should be a stain on real gold that needs to be cleaned immediately with toothpaste or baking soda solution. Read more about this in our article “How to clean gold.”

Instead of iodine, you can use a lapis pencil purchased at a pharmacy, which will cause a reaction in any metal except gold. With a pencil, just put a dot in the place of the cut, after moistening it with water, and monitor the changes that occur for 3-5 minutes.

Interaction with acids leads to a change in the color of base metals

A safer way to test for gold (but not for fakes) is to use acids. Since gold does not react with them, gold products should not change their color; impurities in the alloy may darken or lighten slightly, but crude fakes will become stained.

https://www.youtube.com/watch?v=Ko7YJJ6h9I0

Of the most readily available household acids, table vinegar is quite suitable for this task. How to test gold with vinegar - immerse the items you want to authenticate in it and observe them for a few minutes. Nothing will happen to real gold jewelry.

Professionals advise using acid markers designed for gold of different grades, which can even be ordered online

Methods for testing gold at home are quite simple, but do not always guarantee the accuracy of the results. Sometimes you cannot do without the help of experienced appraisers. They know how to test gold using special reagents and equipment, such as spectral analysis.

Questions about how to check gold purchased from strangers in an underground passage are best avoided in principle. The probability of getting into trouble is much higher than the chances of getting rich at the expense of other people's “family heirlooms”.

Source: https://hozpedia.ru/kak-proverit-zoloto.html

How to check the authenticity of gold without a jeweler

“Gold will always be in price!” say numerous statements by politicians and economists of all eras. Indeed, this precious metal has always interested people.

Of course, with such popularity, fake gold began to appear, visually similar, but worth absolutely nothing. Are you sure that your gold is real? It is quite possible that it may turn out to be artificial.

In this article we will tell you how to check the authenticity of gold at home without the help of a jeweler!

Step 1: Check for hallmark on the gold itself

Sample is a special mark that shows the amount of the treasured metal in the product itself.
In Russia, the bulk of jewelry has 585 standard, in the USSR it was 583 standard. If your value is higher, then the product is elite and costs very high. The sample most often does not erase, but if this happens, then do not be upset, just see the following tips. An erased sample is not a sign of fake gold!

Step 2: Test with Iodine

To check this way you will need:

• Iodine;
• A cotton swab (preferably several, no one is safe from mistakes);
• Something sharp (knife, file or something similar).

In an inconspicuous area, lightly scrape the gold jewelry. It is best to do this where it is adjacent to the skin or at the back end. You can make a very small scraping, but then stock up on a magnifying glass and a pipette. Apply iodine to this area. If the iodine immediately begins to turn white and evaporate, then this is a fake. On real gold, iodine remains dark and does not evaporate for a long time.

Next, wipe off the iodine and look at the place where you scraped off the layer with a knife. If it turns black, then the gold is real, if it turns white, then it is fake. After the experiment, be sure to clean this place with paste and a brush, otherwise the real shine will not return to the gold!

Step 3: test with ammonia

The principle of testing is the same, only you should not pour ammonia onto the test site, but rub it in for 15 - 20 seconds. This should be done with a cotton swab, so the product will not be damaged, and the result will be most obvious.

So, real gold will not give any response, but the fake will turn black. Also, this blackness will remain on the fleece itself. It is clear that black spots will be very noticeable on white cotton wool.

Don't be afraid, this procedure is more than safe for both you and the gold.

Step 4: Checking with Lapis Pencil

This pencil is freely sold in any pharmacy. It reacts with almost any metal, except gold. That is, if you have real gold in front of you, it will not change, but fake gold will turn black. However, do not forget that low-grade gold also undergoes a similar reaction. This happens due to the low content of precious metal in the product itself.

Don't forget to wipe the gold as you would with iodine! Otherwise, dark spots will spoil the entire appearance of the decoration.

Step 5: Magnet Test

Most low-quality fakes are made of gold-plated steel. Of course, such a product will be magnetic. If you didn't know, gold is not affected by magnets. In this way, you can verify its authenticity absolutely without damaging the product.

However, it is worth noting that some modern fakes easily bypass this test, because materials other than steel are used.

Step 6: Gold Test

Different metals have different densities. Therefore, this method has the right to exist. You will need a gold item that you are absolutely sure is authentic. Just scratch one against the other and compare the scratches. If they are similar, then the gold is real, if they are different, then this is a fake. This method damages both products, so it is not suitable for everyone, but it works, which is more important.

Step 7: Ceramic Test

Scratch the ceramic tiles with your gold piece. If the material is real, then a golden mark will remain on the ceramic, but if it is fake, then the mark will be black. It's simple! However, do not forget that the golden color may turn out to be paint. In this case, we are looking at a product whose “filling” should have a color other than gold.

Step 8: test with rye bread

Wet the rye bread with water and apply the resulting mixture to the gold being tested. Leave it alone until the bread is completely dry. Next, clean the jewelry and look at its condition. Real gold will not change, while fake gold will oxidize. Because of the lack of reaction, gold is so valuable, don’t forget this!

Eventually

We have come to the end of the methods by which you can check the authenticity of gold without a jeweler. It is worth noting that most of them give one hundred percent results and cost mere pennies. But that’s all we need!

Having analyzed the content of the article, we can come to the conclusion that:

• Real gold does not react to substances such as iodine, ammonia and peroxide;
• It leaves only a golden color on other materials, others show its fakeness;
• It conflicts equally with real gold, since the density is approximately the same;
• Before checking, it is worth looking for markings about the purity and authenticity of gold;
• Low-quality fakes are covered only on top, the filling remains chrome or black;
• Real gold does not magnetize, while fake gold does it very well.

If your jewelry has passed all these tests, then we can say with certainty that it is real. Happy wearing!

Source: https://leydi-prelest.ru/semya/podlinnost-zolota.html

Algorithm and rules for testing gold using iodine – Shine Gem

Tompak, Aufor, Pinchbeck, Goldin, Vermeil, Belgica, Similor These and a dozen other popular alloys have absolutely nothing to do with gold, but outwardly they cannot be distinguished from the noble metal.

In the age of advanced technology, the famous phrase “all that glitters is not gold” acquires particular relevance. Imitation gold jewelry is a profitable business for scammers. To avoid becoming their victim, use simple methods to verify the authenticity of jewelry.

Natalya Volkova July 05, 2018

A high-quality fake cannot be distinguished from the original.
Therefore, the main advice is to purchase gold jewelry only from trusted showrooms with a good reputation.

And if in doubt, contact professional jewelers to check the value and quality. To independently diagnose gold for authenticity, start by studying the basic properties of the yellow metal.

Properties and features of metal

The history of the precious metal can be compared with the history of civilization: the Old Testament contains lines about gold. Metal has been used in jewelry for over 5 thousand years: religious objects, utensils, and gilded clothes were made from it.

There is no such thing as 100% pure gold - it cannot be completely purified from impurities of other metals (even bank bars are 99.99% gold, which is obtained exclusively in laboratories).

Gold stands out in three ways.

1. Strength. Aurum is a soft, ductile metal with a hardness similar to that of a fingernail. Thanks solely to this property, the gold alloy can be given absolutely any shape and is easy to process. The new product is sold perfectly polished. Worn jewelry is distinguished by scratches and abrasions. If you scratch gold with a pin, it will leave a mark. After checking the metal “tooth”, a light impression will also be preserved.
2. Smell. Real gold has no smell. If, after rubbing in your hands, a metal product has a characteristic odor, then it is unlikely to be a real gold object.
3. Color. Pure gold is yellow in color with a warm tint and a noble shine. Gold with an admixture of copper has reddish tones. The places where the links join will be slightly different in color: soldering is always brighter. True, this can be seen on the woven elements of chains and bracelets. On earrings and rings the color difference is not noticeable.

Kinds

Pure metal is not used to create gold jewelry due to its softness. In the original alloy, the percentage of noble metal is 37.3; 58.5 and 75%. This indicator determines the sample.

The rest is impurities that are responsible for color and hardness. Currently, there are ten types of gold of different shades, which are obtained by alloying.

This is the name given to the process of adding alloys of other metals.

1. Yellow. Classic look. The popular 585 standard contains 58.5% gold, 18% silver, and the rest is copper. The lesser known 750 standard is 75% gold, 17% silver, with the remainder copper.
2. White. It is obtained by combining gold with manganese, palladium or nickel. The latter metal is allergenic, which is why nickel in jewelry has been banned in Europe for more than 15 years.
3. Pink. Ultra-fashionable connection with copper and silver.
4. Red. The alloy contains a lot of copper (half). In European countries it is considered low-grade.
5. Green. An exotic alloy of gold, silver and potassium.
6. Blue. Compound with indium.
7. Blue. Connection with iron and chromium.
8. Purple. An alloy with aluminum, which is used as inserts in jewelry.
9. Brown. Otherwise called chocolate and is created by special processing of the surface layer. Canadian jewelers call the new compound 584 hallmark.
10. Black. Another newfangled jewelry trend. This is either an oxidized alloy of gold, chromium and cobalt, or a special technology of coating gold jewelry with a layer of amorphous carbon or black rhodium.

Authentication

Visual assessment is the fastest, easiest and, of course, the first way to independently check the authenticity of a product. Please note two things.

1. Try. Carefully examine the “wrong side” of the decoration. It is easy to distinguish between the sample stamp and the manufacturer's imprint with the naked eye. They are mechanical and laser. A magnifying glass or magnifying glass will help you see the mark better. The print must have clear outlines, numbers and markings must be readable and understandable. Counterfeits can also be stamped with hallmarks, and in this case only a competent jeweler can distinguish a fake. Jewelry without hallmark is 100% fake.
2. Tag. The passport of the decoration is the tag, whose presence is also required. The manufacturer puts a quality control stamp on it and indicates the following parameters: name, metal name, sample, size, weight, description of the inserts.

Pay attention to the weight of the proposed precious purchase, especially a massive one. Large jewelry may have foreign metals soldered into it to add weight. You are unlikely to find out what is contained inside a voluminous chain or ring and will buy ordinary jewelry instead of jewelry. Externally, a massive gold item cannot be light: it means it is hollow or made of dubious alloys.

Magnet

High-grade gold will not stick to a powerful magnet because it has anti-magnetic properties. Aluminum and copper are slightly attracted.

If a chain, earrings or ring sticks strongly to a magnet, it means that it contains an impurity that is susceptible to the influence of a magnetic field. If 585 gold (or higher) is highly magnetic, the home authenticity test has failed. This is a fake containing iron, nickel, steel, cobalt or their alloys.

Another way is to roll the decoration into the crumb of black bread for a maximum of half an hour. If the item has oxidized and darkened, your gold is not gold at all.

Iodine

Gold, being an inert metal, practically does not oxidize and enters into a chemical reaction with only a few substances. Iodine is one of them. It is considered a good marker for precious metal. Be as careful as possible and proceed in three steps.

1. Application. Apply a drop of iodine to the back side or an inconspicuous area of ​​the product (you can use a toothpick).
2. Expectation. Let's wait a minute or two. Remove iodine with a cotton pad.
3. Evaluation of the result. If a chemical reaction has occurred and a stain remains, you have the original. In general, jewelry is “afraid” of iodine: it darkens even if it just lies next to the bubble. Immediately remove the stain with toothpaste or tooth powder. The absence of traces of iodine or light milky stains are characteristic of a fake.

There is a known way to check the naturalness of the metal with another antiseptic drug - brilliant green. The procedure is similar. On precious metal jewelry, a green stain applied will change the color to lilac or purple.

Lapis pencil

In a home examination, you can use this antiseptic, silver-containing agent, the main function of which is hemostatic. You need to draw a line on the decoration dipped in water using a lapis pencil and erase it after a few seconds. The remaining trace will indicate a fake.

If a product placed in a container with vinegar becomes dark or changes color, this is an imitation jewelry item.

Acid

The chemical properties of the metal are such that it does not interact with acids and alkalis. Therefore, the method is considered one of the most reliable. To distinguish real jewelry from fake, nitric acid is used. Proceed in two steps.

1. Application. Place the product in a clean metal container. Using a pipette, apply a drop of nitric acid to the decoration.
2. Evaluation of the result. If the gold has changed color to greenish or has become stained, it is a crude counterfeit. The color will change slightly and take on a milky tint - on a gold-plated product or if it contains impurities. The color and appearance of real gold will remain unchanged.

You can also use a special acid kit, sold in jewelry stores and in chemical reagent and laboratory supply stores.

Since Aurum is one of the heaviest metals, its quality can be determined by immersion in water. Real gold sinks very quickly, and products with a large amount of impurities or counterfeits sink slowly and smoothly.

Test for fashionable white products

The reason for the popularity of white gold is fashion and its features: it is much harder than yellow, which allows you to securely mount and frame precious stones.

The alloy contains palladium, manganese or nickel, which gives it a matte silver color. In everyday life, white gold is mistakenly called platinum, which is actually much more expensive. In appearance, white metal is very similar to silver, so they can also be easily confused.

Sulfur ointment, which is sold in pharmacies, will help you test white gold at home. The decoration should be coated with a thick layer of the preparation for a couple of hours. Silver or an alloy with a high content will definitely turn black, but white gold will retain its original appearance, that is, a chemical reaction will not occur.

White precious metals can be distinguished from each other and from steel by their density. To do this, the volume and weight of the product are determined, then the density is calculated using the formula, and the indicator is compared with the “native” densities of the metals. If the jewelry, in addition to the metal itself, also has stones, this method will not work.

The time of special demand for jewelry is the days before New Year (the main peak is the last week of the end of the year). According to statistics, from the first days of December the number of fraudulent cases has at least doubled. To avoid running into a fake, be vigilant and pay attention to the presence of the sample and tags.

And most importantly, do not under any circumstances buy jewelry in underground passages, on the beach, or in markets from dubious sellers. Make jewelry purchases only in specialized stores.

If you doubt the authenticity of the jewelry, contact professionals who, using special equipment, will accurately determine the quality and price of the metal. It is clear that this service will be paid. But purchasing gold is also a kind of investment.

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Source: https://kabirski-store.ru/drugoe/algoritm-i-pravila-proverki-zolota-pri-pomoshhi-joda.html

How to test gold for authenticity at home

Anyone who has gold jewelry would like to check the gold at home for authenticity.

The demand for gold jewelry is very high, and scammers counterfeit jewelry made of precious metal in various ways, adding the desired properties to them, or they sell goods of a lower standard as of a higher standard.

At the same time, there is no way to tell from the outside; the fake also looks good.

How to test gold at home?

Alloys of gold products

Gold, due to its chemical properties, is a precious and soft metal, and if you do not add other components to it, it will not hold its shape.

In certain proportions they can add:

• platinum,
• silver,
• bronze,
• brass,
• steel.

A sample is placed on gold jewelry, which shows the proportion of gold in the product in relation to other metals. The standard is considered to be 999 gold purity, that is, pure gold.

In the finished jewelry, the maximum proportion of gold is 75 percent, and 25 percent is admixtures of other metals, that is, 750 standard.

For mass sale of gold jewelry, 585 and 375 samples are made. Gold products with 375 samples are made with a lower gold content, usually watches, antiques, and the price of products from such an alloy is lower than those made from 585 gold.

Where to check authenticity?

To check the authenticity of gold, you need to contact an Assay Office for this service, or an expert in a jewelry workshop to get a quality solution.

Most often, gold jewelry is counterfeited by adding metal to the alloy:

• tungsten,
• aluminum,
• copper,
• brass,

Because they are similar in density to gold. They counterfeit it like this: a product is made from tungsten, called a blank, and the top is coated with gold. To understand that it is a fake, you need to drill a hole in the product, after which you will see what is inside.

Authentication at home

Let's look at what methods there are to check the authenticity of gold jewelry at home.

How to test gold with iodine and vinegar

How to perform a check in one minute?

To test gold jewelry at home using iodine, you need to apply one drop of iodine to the inside of the item and leave it for 1 minute.

Using a cotton pad, gently wipe off the iodine. We analyze the color of the metal; if it has not changed, then most likely it is real gold, since it does not react with iodine.

However, if iodine is kept on a gold item for more than two minutes, a reaction may occur; then traces of iodine can be removed using a soap solution.

Everyone also has vinegar at home; it can also help us in checking the authenticity of gold. It is important that it is better not to check jewelry with stones using vinegar, as the acid can ruin them. To do this, you need to put the decoration in vinegar for a short time and watch the reaction.

If the metal has become blacker, then it is most likely not pure gold, but a counterfeit made from base or semi-precious metals.

Ordinary water can also help us check jewelry. Take a glass of water and place gold jewelry in it. If a gold item immediately goes to the bottom of the glass, this means that most of the composition is gold. But this is not a 100% guarantee.

How to check the authenticity of gold at home using a magnet

When using this method, a magnet is used.

As we know, precious metals are not magnetic, so real gold jewelry should not react to a magnet.

But you also need to take into account that metals such as aluminum and copper are also not magnetic and can also be used to counterfeit gold jewelry.

If one of these metals is involved in the deception, then you need to look at the weight of the jewelry, since copper is lighter in weight than gold, and the product as a whole will be lighter.

How to check the quality of gold using a lapis pencil

Easy to use method. The main function of a lapis pencil is to stop bleeding from scratches, warts, and cracks. You can buy it at the pharmacy.

With this pencil you need to draw a stripe on a damp piece of jewelry. Then you erase the strip, and see if there is a trace left, then most likely it is not real gold, but a fake.

How to check the authenticity of gold jewelry using gold

Surely you have a piece of gold jewelry whose authenticity you have no doubt about.

Golden touch

Take real gold jewelry and use it to draw a line on something hard. Do the same steps with the gold jewelry that you doubt. Compare the result, if it is different, then perhaps the gold is fake.

Magnifier

Your gold jewelry can also be checked using a magnifying glass, namely the hallmark. The sample should be clear, with smooth edges.

Reagents

Now stores sell special reagents and substances with acid. There is a separate reagent for testing different metals.

The acid will not react with the precious metal and will not leave any traces on it.

If it's fake, it will be covered in stains.

You also need to keep in mind that all actions must be performed with protective gloves and a mask for safety.

You can test gold jewelry at home using these methods. But if it is a high-quality fake, then professional jewelers can help you find out.

Source: https://kakchistim.ru/uhod-za-veshchami/dragocennosti/kak-proverit-zoloto.html

How to test gold at home: vinegar, iodine, magnet | mk-soyuz.rf

Gold jewelry is in great demand all over the world. The jewelry market is growing rapidly, while gold production, on the contrary, is falling from year to year. Nowadays, the desire to get rich forces people to cheat. Most of the items in jewelry stores are actually an alloy of metals.

Not the whole thing may be sent to inspection services for examination, but only a part made of real gold. For example, it could be a clasp or a lock. In addition, they only check the top layer; what’s inside remains unknown. Even the highest quality gold jewelry contains impurities that occupy a smaller part, because the metal itself is very soft and wears off quickly.

To avoid being deceived by scammers, you need to know how to test gold at home.

How to test gold at home for authenticity

There are a large number of simple ways to determine authenticity at home:

• by sound
• by the tooth
• by reaction to the sun

Using improvised means:

• vinegar
• lapis pencil
• iodine
• magnet

They can be used in the absence of professional study opportunities. With the help of folk, improvised means, you can determine the quality. Let's consider these methods in more detail.

How to determine by sound

Another way is to check by sound. It is not suitable for soft products with several links. The gold product must be thrown onto a perfectly hard and flat surface, and if you hear a ringing sound, it is a fake. This method is suitable for people with sensitive hearing.

How to identify gold by tooth

One of the easiest ways to test gold for authenticity at home. To do this, you just need to bite him. If it's genuine, it will leave bite marks on it. The experiment is dangerous because the teeth may be damaged. Fake jewelry contains very hard impurities. Using a method such as a bite test in a store is prohibited. Verification does not provide a 100% guarantee. For example, if a fake is made of lead and covered with a layer of gold on top, it will also have bite marks.

How to test gold by reaction to the sun

You can conduct such an experiment on a bright sunny day. Place the jewelry in the shade and note the level of shine. Next, place it in bright sunlight. The fake shines much brighter in bright light. In this case, high-quality jewelry should shine equally in the shade and in the sun.

How to test gold with vinegar

You can easily and simply test the product at home using vinegar, which is almost always available in the kitchen. This method is very simple. The product must be placed in vinegar for three minutes. If the jewelry has not darkened, it means it is not a fake. Next, after completing the testing procedure, remove the vinegar from the surface by rinsing well under cold water, wiping dry and polishing with suede.

How to recognize gold using a lapis pencil

You can use a lapis pencil designed to stop bleeding. In addition, it can be used to test gold. Wet the decoration with water and draw a stripe with a lapis pencil. Interaction with metal leaves a mark only in case of counterfeit.

How to determine gold or not with iodine

Test valuable metal by chemical reactions. This simple method can more accurately determine authenticity. Wipe its surface well, add 1 drop of iodine and leave for three minutes. The surface should not change color. If there is a trace of iodine on it, it will have a milky to black color and it is a fake.

After completing the procedure, it is cleared of traces. You can use Coca Cola for this. Dip into the drink and leave for 5 minutes.

You can check the authenticity of your jewelry using gold chloride. Apply it to the surface of the product. Chemical reactions have occurred: hissing and darkening - which means this is a fake.

How to identify gold at home using a magnet

A very easy way to check whether the product in front of you is fake or not. Souvenir magnets are not suitable for the experiment, but only special ones from the store. It is quite rare to find fakes made of metal covered with a thin layer. To test this, hold it near a magnet. The fake one is immediately attracted. The magnet does not attract bronze, copper, aluminum and you will not be able to verify the authenticity. Professional inspection

There are ways to determine even the sample of a given metal. This rather complex activity is carried out by specialists in this matter. Determining gold purity at home is almost impossible.

Test tube stone

This is one of the most effective ways to test gold for authenticity, known to us since ancient times. The method for determining authenticity is very simple and is carried out as follows: the decoration is carried out on the stone. The mark left on the surface is compared with the tones of the strokes of a product of the same sample.

Using needles

You can check the sample using needles made from several samples of gold. The specialist makes scratches on the inside and applies nitric or sulfuric acid to them. The color of the scratch is compared with the color of the needle and thus the sample is determined.

Alloys

Gold jewelry comes in different colors. It depends on the combination of impurities in it.

• White White is highly valued in the jewelry market. This metal is very durable. Silver and platinum give it a white tint.

Source: https://xn----ntbhhmr6g.xn--p1ai/dragmetallyi/kak-mozhno-v-domashnih-usloviyah-proverit-zoloto

How to test gold at home?

The question of how to test gold at home may arise when purchasing jewelry online, by hand, or at non-specialized retail outlets, especially abroad.

When buying a gold product in official stores, you must ask the manager for certificates and documents for the goods. If doubts remain, you can check the authenticity of gold using home remedies, without resorting to complex examinations.

The household method may not allow you to distinguish white gold from silver; in such cases, the jewelry should be submitted for laboratory testing.

Visual inspection

Before checking gold for authenticity, you should carefully inspect the product. Any jewelry product is marked with a hallmark indicating the percentage of precious metal and the manufacturer's mark (the initial letter of the manufacturer). The sample should have clear outlines; numbers and letters can be easily read when magnified. The mark is applied parallel to the edges.

The bulk of jewelry in Russia is produced in 585 standard. Products of 750 standard and higher are considered elite and have a high price. A budget option is 375 standard products. Products with a lower content of precious metal are costume jewelry.

A gold chain or gold ring, inherited from a grandmother, is marked with 583 hallmarks - this was the standard that existed in the USSR.

The newly purchased product is supplied with a thick paper label with a seal. The label indicates the weight, purity, name and location of the manufacturer. You need to know how to test gold at home for authenticity. There are several signs:

1. Processing quality. The surface must be polished to a shine, without cracks or chips.
2. Homogeneous uniform shine over the entire area.
3. Workmanship. A counterfeit product may have traces of rough processing and soldering; the stone (if present) is not held firmly.

Checking with available chemicals

To understand whether you purchased gold or not, you need to carefully examine the product. After a visual inspection of the product, you can check for authenticity at home using available chemicals.

It is not recommended to use the ancient method of testing “to the point”, since it is possible to distinguish gold from a fake in this way only in the most primitive cases, without even taking into account the aesthetic component of such a test.

The following methods are common:

1. Reaction with iodine. Real gold reacts chemically with iodine, causing the metal to darken. To distinguish gold from a fake at home, just drop the medicine on the product or moisten the surface with a cotton swab. Darkening of the surface of the jewelry at the point of contact with iodine will serve as evidence of the presence of gold in the object being tested. The interaction of gold with iodine causes persistent darkening of the metal, which can be removed with a 30% solution of sodium hyposulfite (a medicine sold freely in pharmacies).
2. Acetic acid. The reaction with acetic acid is a proven way to determine gold at home. The product is placed in a 70% solution for 5 minutes. If the surface darkens or another reaction begins (even the release of gases), then you have a fake jewelry. Gold does not react with vinegar. Impurities contained in manufactured products will also not give a reaction in standard tests. If the counterfeit contains precious metal in small quantities, the reaction will occur, but the darkening will be uneven or in a separate part. Jewelry with standard hallmark will not change. After the experiment, do not forget to rinse the product with water, avoiding getting vinegar on exposed skin. Vinegar can have a negative effect on silver and pearls, so products with such inclusions should not be tested in this way.
3. Reaction with silver nitrate. Silver nitrate reacts with any metal except gold. The drug is known in pharmacies as lapis pencil. To test, the jewelry must be moistened with water and the substance applied to its surface. Gold will not react to contact with silver nitrate, other metals will change color (darken). Testing low-grade gold with a lapis pencil is not advisable; a reaction may occur due to the high content of impurities in the product.

To check gold for authenticity at home and not make a mistake, you can watch a video on this topic.

Other home testing methods

Checking gold for authenticity at home can be done in several ways:

1. Magnet check. Crude fakes are made by applying gold plating to a steel base. In this case, the product will become magnetized.
2. You can determine the authenticity of gold at home using another gold product that is beyond doubt. To do this, you need to make scratches on a hard surface with the gold product and the object being tested. There should be no difference in the traces left. It is possible to scratch the gold piece and the test sample with the same hard object. The tracks must be identical.
3. The test product must be used to scratch the ceramic tile. The precious metal will leave a characteristic golden color, in other cases the band will be dark.
4. A simple test can be done using rye bread. The crumb should be soaked in water to a homogeneous semi-liquid state, and the resulting mass should be applied to the product being tested. After drying, the fake will show signs of oxidation.
5. People with sensitive hearing can be recommended to test the sound of gold products. The easiest way to check the quality of rings is this way. You need to throw the decoration from a small height onto the glass surface. Precious metal will emit a melodious crystal ringing, fake products will clang.
6. Polished gold looks the same in the sun and in the shade. If the sample being tested shines in the light but fades in the dark, it is a fake.
7. A deep scratch should be applied to the product being tested with a hard object (for example, a diamond glass cutter). If metal of a different color is found under the scratch, then the product was made by gold plating.

Determining the authenticity of jewelry in everyday conditions, at best, shows the presence of precious metal, but does not give an idea of ​​the sample and the amount of impurities. An accurate conclusion can only be obtained in laboratory conditions.

Source: https://placeclean.ru/kak-proverit-zoloto-v-domashnix-usloviyax.html

How to check gold for authenticity at home?

Sometimes the question arises of how to test gold for authenticity at home. After all, today such products are sold in huge quantities and there is a risk of being counterfeited. Since the price of such jewelry is high, many scammers do not hesitate to pass off other materials as it.

If you make a purchase in an official store from a jewelry factory, then there is nothing to worry about. After all, they are always ready to provide quality certificates and other documents confirming the authenticity of the product. But in the market or somewhere abroad, it is better to know how to determine the authenticity of gold using available means.

You need to inspect it carefully from the very beginning. The gold must have the manufacturer's markings and numbers. They indicate the quality of the material in front of you. Thus, the 583 and 585 samples are considered the most popular in the Russian Federation. This indicates that the product contains at least 58.5% pure gold, and the rest is metal impurities, which most often serve as coloring and give the product more hardness.

There are other common hallmarks - 999, 750, 375. In Germany, even 333 is considered official confirmation that the metal is noble and valuable. But remember that in the form of jewelry, very high quality indicators are rare. The fact is that gold itself is quite soft and it is inconvenient to store it in this form, because it can quickly be damaged.

Due to various impurities, there are white gold, pink, red and other varieties. Therefore, it is not worth saying that only color is an accurate indicator. On the contrary, it is easiest to fake by creating a yellow coating on an ordinary steel object. If the product is valuable, then the marking on it should have clear boundaries, and the mark indicates the manufacturer.

Also in the store, along with the decoration, you will also be given a label on which the sample, weight, name and manufacturer’s plant are described. It is worth determining other details:

• quality of polishing - real gold products should not have cracks or chips, the surface shines equally in all places;
• If there is rough processing, you can find traces of soldering, uneven edges, and poor fastening of stones.

If you need to verify the authenticity of gold products, then it is best to use those methods that make it possible to accurately determine the presence of a valuable metal in the composition. But remember that due to various impurities, sometimes such reactions remain unreliable.

Vinegar

Pour enough product into a container at a concentration of 70% so that it completely covers the decoration. Place the product there for 5 minutes. If it is counterfeit, the surface will begin to oxidize or darken, but gold does not react in any way to such a chemical substance. Even if the composition contains impurities, in the case of factory production they should also not come into contact with vinegar.

If it is a fake, gases may even be released, the product will darken or become covered with uneven spots. But after treatment, be sure to rinse the gold jewelry under running water, as if it comes into contact with exposed skin, it will lead to an undesirable reaction. Please note that if the product contains silver impurities or pearls, then there is no need to check it in this way, because they give a negative reaction when in contact with vinegar.

Iodine

You can also find out about the quality of a product’s composition using iodine. To do this, you need a cotton swab and some sharp object that can leave a small mark on the decoration. On the inside, where the stain that has formed is not visible, make a light cut; just scrape off the top layer. After this, moisten a cotton swab with iodine and apply a small amount to the damaged area. A small drop of the substance is enough.

Gold will react in the form of darkening of the metal and the stain will not disappear for a very long time. And in the presence of various low-quality impurities and questionable composition, the color will quickly be restored and no trace will remain. To restore a beautiful appearance to a gold item, you need to immediately wash it with toothpaste.

Silver nitrate

There is a lapis pencil on sale. It contains a small amount of silver, which does not react with gold. Any other metal impurities in the jewelry will not pass testing. To check, you need to wet the product a little and touch the surface with this pencil.

If there is a low standard or no gold at all, the item will change color. But this method is not considered correct, since valuable metals, but with various impurities in the composition, can give a similar reaction. After all, even original jewelry usually contains only half pure gold.

People often talk about other methods of checking authenticity:

1. Magnet - will help to detect a crude fake when a yellow coating is applied to a simple steel base. In this case, the product will be attracted to the magnet, but the real thing will not.
2. Take another item made of gold, the originality of which you do not doubt. Swipe the real decoration over the hard surface first, then the dubious one. If the marks remain the same, then both products are of equal quality. Authenticity is checked in the same way by applying a small scratch on the inside. If identical marks remain, this indicates that both are made of gold.
3. It is believed that if you pass an original object over a ceramic surface, a characteristic yellow stripe will remain on it. In all other cases, the trace will be dark.
4. Rye bread - to check, take the crumb and soak it in water. Then you should stick this mass on the product and wait until the bread dries. As a result, the fake will become dark, and the gold will not change its properties.
5. The sound of hitting a hard surface will tell a lot to a person with good hearing. A gold object makes a pleasant ringing, clear sound, while other metal simply clangs.
6. Polishing – on original jewelry it is perfectly smooth and uniform. Such a product will sparkle equally in the shade and in the sun. And dubious objects made from different alloys glow only in bright light.
7. If you have a diamond glass cutter or other very hard tool at hand, then after scratching the fake, other metal will be visible under the top coating.
8. Ammonia - to check, you need to drop a little on a cotton swab and use it to rub the substance over the gold object. The procedure lasts about 15 seconds. After this time, it will be clear whether the product in front of you is a fake or not. So, real gold does not show any reaction to ammonia, but other metals will turn black or the cotton swab itself will turn blue.

Obviously, such methods are applicable only at home. Professionals in specialized institutions use more reliable instruments and laboratory substances. Thus, specialists who accept products from people perform the following procedures:

• They pass a gold object over silicon slate and use certain acids; the remaining metal particles give one reaction or another. For example, a mark from a questionable item will disappear very quickly, but the gold mark will remain.
• A professional will also examine the hallmark under a magnifying glass and install the manufacturer’s mark.
• A complete and reliable conclusion about the quality of the composition of the jewelry can be made only after laboratory tests.

How to check the authenticity of gold yourself?

Source: https://ubratdoma.ru/drugoe/kak-proverit-zoloto-na-podlinnost.html

How to test gold at home

Gold jewelry is in great demand all over the world. The jewelry market is growing rapidly, while gold production, on the contrary, is falling from year to year. Nowadays, the desire to get rich forces people to cheat. Most of the items in jewelry stores are actually an alloy of metals.

Not the whole thing may be sent to inspection services for examination, but only a part made of real gold. For example, it could be a clasp or a lock. In addition, they only check the top layer; what’s inside remains unknown. Even the highest quality gold jewelry contains impurities that occupy a smaller part, because the metal itself is very soft and wears off quickly.

To avoid being deceived by scammers, you need to know how to test gold at home.

Features of gold authentication using iodine

The number of cases related to the sale of counterfeit gold is increasing every day. The use of modern technologies makes it possible to make successful copies of jewelry, and from metals that are significantly inferior in value to gold. It is known that a 100% guarantee of the authenticity of gold jewelry can be obtained through expert evaluation of the product. At-home methods for testing gold items are also popular among jewelry buyers. How to test gold with iodine?

The thing is that only this metal is capable of entering into a chemical reaction with iodine tincture, as evidenced by the appearance of a dark spot at the site of application of the product. But, even despite its information content, this method of checking has one drawback: stains may remain on the gold product, spoiling the appearance of the jewelry. However, this problem can be solved, since after the test the stains can be easily removed.

Testing a gold coin with iodine

Features of the method

The authenticity of gold can be tested using iodine in a few minutes, but for testing you should prepare:

• a bottle of iodine;
• cotton swab;
• a piece of sandpaper.

First of all, you need to take the product and sandpaper. Then you should select a small area of ​​the item and rub it with paper (it is advisable to do this on the side that will not be visible when wearing the jewelry). Then the tip of a cotton swab should be soaked in iodine and this substance should be applied to the area of ​​​​the decoration treated with sandpaper.

After this, you can monitor the reaction of gold to iodine: evaluate the color of the stain that remains. The darkening of an area of ​​the product indicates that the jewelry being tested is indeed made of 585 gold.

If the stain has acquired a milky tint or has not changed color at all, then you can be sure that the product being tested is made from an alloy of less valuable metals, such as brass, copper or bronze.

Important: this verification method is not suitable if the jewelry contains precious stones!

How to remove a stain?

Even if testing gold with iodine has demonstrated that the jewelry made of the precious metal is genuine, the joy of the owner of the item can be overshadowed by one problem - the remaining dark spot on the jewelry.

Using some methods it can be removed, but no abrasives (cleaning powders, tooth powder, etc.) should be used for this purpose.

), otherwise the product can be hopelessly damaged! Products containing chlorine are also not suitable for this purpose, as they can damage the metal.

Iodine

Methods for purifying metal from iodine:

1. Using vinegar essence (but not table vinegar!). First of all, you should protect your hands with rubber gloves, since the substance you have to work with can cause skin burns. Soak a cotton pad in the essence and begin to thoroughly rub the iodine stain. After it is removed, the jewelry should be washed in running water.
2. Hyposulfite, which is sold at the pharmacy, will help remove iodine from a ring, chain, earring or other jewelry. Dilute a tablespoon of the chemical in a glass of water, and then immerse the gold product in this solution. After half an hour, the jewelry is removed from the liquid and washed thoroughly.
3. You can clean your jewelry in another way. To prepare the cleaning product, take 70 grams of bicarbonate of soda, the same amount of bleaching lime and 20 grams of sodium chloride. All these components should be mixed in a liter of water. The finished solution is heated to a warm state, after which gold is immersed in it and its appearance is monitored. After the stains disappear, the jewelry should be thoroughly rinsed and dried.
4. A proven method for removing iodine stains is to immerse the item in a glass of Coca-Cola. In addition, this drink perfectly cleans gold from fatty film and dirt.

If the methods listed above for purifying gold after testing with iodine did not bring results, do not despair. Craftsmen working in modern jewelry workshops, using special means, can remove a dark iodine stain from a piece of jewelry in a few minutes and return it to its ideal appearance.

Despite its advantages, testing precious metals with iodine cannot guarantee 100% reliability of the result. In order not to doubt the quality and authenticity of jewelry made of precious metals, they should be purchased in specialized stores, where certified products that have undergone expert evaluation are guaranteed to be sold.

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Source: https://DedPodaril.com/zoloto/imform/kak-proverit-zoloto-yodom.html