What is green gold - Metals and their processing

Green gold: what is it, review, samples, authentication, price

Everyone is used to seeing gold in yellow. This is the standard appearance of noble metal. However, sometimes we come across other shades of gold jewelry that leave us amazed.

These colors include the green tint of gold rings or chains. So what is green gold?

Historical reference

According to the results of archaeological research, the birthplace of green metal is the island of Crete. The very first greenish gold came to us from the time of the 1st-2nd millennium BC. Even then, a modern name appeared, which remains on the lips of jewelers to this day. This is electrum.

Crete

Electrum is one of the varieties of conformable metal. Similar alloys discovered in the Mediterranean included gold, as well as copper and silver.

Moreover, the last two metals were found in significantly smaller quantities in the nuggets. Silver accounted for only 10-40% of the total alloy.

Some of the green items found have survived to this day - coins of King Croesus. Another name for them is staters. This gold is characterized by a green color with a yellowish tint. Minting of products was carried out in ancient Lydia.

The technology to recreate modern green metal puzzled scientists in the early 19th century. And at that same time, they developed several options for alloys that change the shade of gold depending on the components that make up the alloy.

Composition, characteristics and properties

A precious metal is one that does not deteriorate due to exposure to the environment. Everything that is added to the alloy to gold is called a ligature. Their introduction occurs gradually during melting.

If more than two metals are included, the addition process can be done in stages because different “ingredients” require different melting points.

You may be interested in: Why do you dream about losing an earring?

Depending on the ratio of the main gold metal, as well as the individual components included in the alloy, different gold shades are obtained:

73-75% pure gold and 25-27% silver. This is the highest quality alloy, having an incomprehensible yellow-green tint that shimmers in the light. If silver is exactly 25%, it is the softest metal, most reminiscent of electrum;
75% gold, 23% copper and 2% cadmium - the color of the alloy will be light green;
75% gold, 15% silver, 6% copper and 4% cadmium will turn the metal dark green.

Cadmium is not always included in the composition of alloys; it is more often used for the active occurrence of chemical reactions.

Despite its amazing appearance, unusual for humans, and beauty, green gold can cause harm to the body due to the individual elements that make up the ligature. So, cadmium releases a lot of toxic substances.

Jewelry containing it may pose a danger to humans. This does not manifest itself abruptly, but over time due to the properties of cadmium to accumulate in the body.

Therefore, jewelers in Russia and some other countries refused to work with alloys containing cadmium among the elements. The most popular combination is 75% pure yellow gold, 20% silver and 5% copper.

Other metal can be added to the alloy. For example, nickel, zinc, rubidium, various alkalis. But products containing them pose a threat to people. Thus, nickel can trigger the development of allergies. The other three components are highly toxic.

In our country you cannot find jewelry made of gold in a bright green shade. Rubidium, which enriches the color of gold, in addition to being toxic, turns it into a very fragile structure. It is not practical to wear products made from such metal every day.

The main characteristics of green gold are:

fragility;
porous structure that crumbles easily;
difficult processing.

These three factors do not allow you to make a solid piece of jewelry that will contain only green metal. Therefore, for the most part, green gold is added in small quantities to alloys suitable for coining jewelry.

Sample and authentication

Green gold is characterized by two hallmarks: 585 and 750. Both of them are applicable only in the jewelry industry. Moreover, 585 standard is used for making jewelry only, and 750, in addition to jewelry, is also widely used in the production of souvenirs.

Unfortunately, in modern practice, buying a fake is not uncommon.

The best option to determine the purity of the metal is to go to a specialist. But there are ways that allow you to check the quality of metal at home.

First you need to find a stamp indicating the sample number. There it is possible to imprint one of two numbers: 585 or 750.

After this, you need to carefully examine the joints. If the jewelry is a fake, then closer to the connections of its elements the gilding will be erased.

A magnet will help you check its authenticity. If the metal is genuine, then it will not react to the magnetic field. The teeth marks left after biting the product will also confirm the purity and authenticity of the gold.

Green metal price

Green gold is a rare but popular metal today. It continues to be in demand among the fairer sex, who are partial to unusual jewelry. However, purchasing green gold jewelry in stores is not so easy.

Most often, they have to be ordered from photos in catalogs of famous jewelry houses. But a magazine image will not convey the true beauty of the product.

The price of gold is determined by the situation on the stock market, as well as what components are included in the alloys. If the jewelry contains palladium metal, it will be very expensive.

It is cheaper to purchase a product that contains silver, nickel and other additives.

Compared to any other metals, the price of green metal is the highest due to its unusualness, sharpness, and fashionability.

Thus, the cost of one gram of 750 green gold can reach 5,000 rubles.

You may be interested in: What does it mean if you dreamed of a gold chain?

It is used to make rings, earrings, bracelets, chains, and is part of the metal from which medallions, watches, and brooches are cast. Gemstones of the corresponding shade are best suited to match the original color. These could be emeralds.

With their help, it is possible to convey the stunning play of light on the product. Such gold is a true treasure for any jeweler. It will more than justify all his efforts to make the jewelry. The gift will surprise and delight a woman, and for a young couple it will become a symbol of love and fidelity in the form of wedding rings.

Source: http://VseoZolote.ru/interesno/zelenoe-zoloto.html

Toxicity of green gold - methods of determination

Precious metals are an excellent investment and savings opportunity. But not all of them are truly safe and harmless. There are some precious metals that can have a detrimental effect on the body, even when used in alloys in small quantities. First of all, this applies to green gold. That is why before purchasing jewelry you should carefully read the composition of the alloy. Particularly dangerous additives are cadmium and mercury.

Why are toxic metals used?

The use of toxic metals in jewelry and industry is due to the following reasons:

Lack of other ways to obtain the required color of the product.
The need to impart certain characteristics to the alloy.

To create green gold, cadmium is included in the alloy. This is quite dangerous, since the metal has a negative effect on human health. But the green color of an alloy does not always indicate toxicity. It is important to choose the right jewelry in order to purchase a high-quality and safe product.

Features of obtaining green gold color

How are certain shades of gold alloy obtained? For this purpose, special impurities are used, which act as a kind of dyes. Preferably the following metals are preferred:

Copper (gives a red or pink tint depending on the percentage of other metals).
Silver (allows you to lighten the metal and add a slight shine to it).
Platinum (responsible for the white, almost snow-white color of the alloy with a slight metallic sheen).
Zinc, palladium and rhodium (to achieve the desired (lighter or darker) shade of red, rose or yellow gold).
Rubidium and cadmium (in combination with copper, potassium, silver and zinc give gold a green tint).

We recommend reading: Information on the mining and production of precious metals in Russia

All of the above metals that are used in gold alloy are harmless to humans. The exception is cadmium, which is toxic and quite dangerous to human health.

Methods for determining gold toxicity

Keep in mind that green gold is not always toxic. If you choose it correctly, you can purchase green jewelry that will be safe for health.

Green gold with the addition of cadmium has been produced throughout recent decades. The proportion of toxic metal in the alloy was very small. This led to the fact that the harmful effect on the body manifested itself after many years of wearing the jewelry.

Toxic green jewelry was only discontinued a few years ago. The reason was the attention of governments of different countries to the danger of cadmium and the overall toxicity of the alloy because of this. As a result, the production of jewelry containing cadmium was stopped. In Russia, a ban on the use of such an alloy was introduced in 2000.

We recommend reading: All about gold leaf - what is it

It is not difficult to distinguish safe green gold from toxic one. There are several ways to determine. The harmless composition has the following brands:

ZlSrM 585-300. This is yellow gold, which has a slight greenish tint.
ZlSr 585-415. The metal has a pronounced green tint.
ZlSrM 750-150. The material is distinguished by a combination of yellow and green colors.
ZlSr 750-250. The metal has a faint green color.

If you are planning to buy jewelry with a characteristic green tint, but there is no passport with a detailed description of the composition, it is better to refuse to purchase the jewelry. In this case, there is a high probability of the presence of hazardous metals in the composition, which makes the metal toxic.

Note! In the USSR, green gold was marked with the hallmarks indicated above, and also stamped ZlSrM 583-300 and ZlSr 583-417. But today they do not produce 583-carat gold, so such markings are no longer used.

So, green gold is a precious metal that can be toxic or harmless depending on the impurities used to give the alloy its green tint. The use of cadmium, which is dangerous, is currently prohibited in almost all countries. The exception is a few states of the European Union, where they continue to introduce cadmium into the gold alloy.

Source: http://inzoloto.ru/precious-metalls/toksichnost-zelenogo-zolota

Green gold: characteristics and composition

13.12.2018

Materials such as green gold are increasingly being used to make jewelry. It is an alloy of the usual yellow metal with silver, sometimes diluted with a small amount of copper and other components to obtain different shades.

Such gold is used both for the manufacture of entire jewelry and as a material for decorative inserts in them.

History of origin

The ancient peoples from the island of Crete began to use this metal for the first time. They extracted it from a natural ore called electrum. The composition of the gold alloy included from 10 to 40% silver, and there were also admixtures of copper and platinum. The material was used to make jewelry and religious paraphernalia, such as idols, temple decorations and religious objects. Electrum mining began about 3 thousand years ago.

Coins made in ancient Lydia are also considered one of the oldest products made from this material. Some of them are over 2500 years old. They were used as a means of payment during the reign of King Croesus, who became famous for being the first of all rulers to demand precious metals in money.

Modern jewelers recreated colored gold in the 19th century. It was already made artificially using a ligature.

In the Russian Federation and the countries of the former USSR, this alloy never gained popularity, but still found its place among connoisseurs.

Properties and characteristics

There are certain standards that green gold must meet. In order for jewelry to be made from it, the material must meet the following requirements:

Be inert and not enter into chemical reactions with air, water, salt, iodine, soap and other substances that a person encounters regularly. If the alloy does not meet this requirement, products made from it will be short-lived at best, and dangerous to wear at worst.
Suitable for processing. The material for jewelry should be quite plastic, but at the same time not break when twisted, stretched or squeezed by a certain force, otherwise it will be difficult to work with.
Be rigid and resist deformation. This is necessary to ensure that the edges of the product remain smooth and polished.
Do not cause allergic reactions or irritate the skin. Any piece of jewelry must be suitable for long-term wear and not have a negative impact on human health.

Variants of this gold differ in color: from greenish-yellow to dark emerald.

The most saturated shades are typical for alloys with the addition of nickel, cadmium and rubidium, but they are used very rarely and only to create additional decorative elements.

Sample and composition

In most countries, green gold is produced in 750 (18 karat) and 585 (14 karat) samples. Its composition may vary significantly depending on the manufacturer. Common variations of ligatures:

15% silver and 10% copper. A classic version of the alloy, products from which have a characteristic greenish-yellow color. It is most often used for making entire jewelry.
29.5% silver and 12% copper. It has a yellow color with a greenish tint.
25% silver. A light green alloy, most similar in its properties to natural electrum. It is used to create not only jewelry, but also souvenirs, as well as items with enamel coating.
38% silver and 3.5% palladium. This alloy has a light light green tint, which is given to gold by silver additives. In the Russian Federation, GOST also regulates an option with 41.5% silver, but such an alloy is already beginning to acquire a grayish color.
30% silver, 8% copper and 3.5% rubidium. A very beautiful metal with a rich bright green color. It is extremely fragile, difficult to process and wears out very quickly, which is why it is almost never used to create entire jewelry. It is used for making decorative inserts in rings, bracelets, earrings and pendants; it goes well with various precious metals and stones. May cause irritation in direct contact with skin. Not approved in Russia.
30% silver, 3.5% nickel and 8% copper. An alloy with an olive tint. It has good strength and is easy to handle, but in approximately one in eight cases it causes allergic reactions when worn for long periods of time. Like an alloy with the addition of rubidium, it is not used in the Russian Federation.
23% copper and 2% cadmium. Option with light green color. Since cadmium is toxic, its use as a ligature is prohibited in the Russian Federation and EU countries, but in other countries such an alloy is sometimes used to create elements that do not come into contact with the skin.
15% silver, 6% copper and 4% cadmium. A very nice looking metal with a rich dark green color. Banned in Russia and the EU, as it can cause allergic reactions and even chemical burns. It has a high melting point and is difficult to manufacture, since cadmium vapor is very poisonous.
29.25% silver, 11.25% copper and 1% zinc. Bright green alloy with a silver tint. Should not be used in enamel products as it contains zinc.
20.75% silver, 0.25% zinc and 3% copper. The metal is a rich dark emerald color. It is considered the alloy with the deepest green color of all 750 samples.

THIS IS INTERESTING: What is electrical aluminum

Different compositions of green gold differ from each other in characteristics and, therefore, in price, therefore the percentage of alloys and proportions of additives should be checked with the manufacturer. It should be taken into account that the GOST of the Russian Federation only approves compositions of 750 and 585 samples with the addition of silver and copper, therefore products with a rich green color are most likely fakes.

In other countries, there are variations of the gold alloy with hallmarks of 10, 12, 15 and 19 carats. They add zinc, nickel, potassium, palladium and other impurities that give the precious metal the necessary properties.

There is also gold leaf, which is used to cover products with the thinnest greenish-yellow film. For its production, tinting ligatures are required.

Use of metal

Jewelers use this material to make a wide variety of jewelry: rings, bracelets, pendants, earrings, brooches, clips, hair accessories, cufflinks, necklaces and chains.

18k green gold is also used as the basis for souvenirs, awards, orders, corporate badges and enamel products. Unlike many other types of colored gold, it can be used as a base for jewelry. Jewelry made from this unusual alloy looks very exotic and seems to glow with a soft greenish light.

Unfortunately, only dull versions of electrum can be used to create an entire ring or bracelet. Mixtures with a deep green tint are usually too brittle or toxic to be useful. Nevertheless, inserts, overlays and individual elements of jewelry are sometimes made from them.

The combination of several types of green gold with each other, as well as their combination with other alloys and intermetallic compounds of different shades, looks very beautiful. The contrast between the two metals makes the jewelry unusual, and the harmonious combination of colors gives it tenderness. At the same time, a product made of such gold will almost never look too bright or vulgar, unlike classic yellow jewelry, which is quite easy to “overload”.

The noble green metal also goes well with many precious, semi-precious and decorative stones: from emeralds and sapphires to quartz and crystal. They can be used either as small inserts or as the main element, the beauty of which will be emphasized by a more modest-looking metal.

Plant and floral motifs are very popular in electrum products. Often in jewelry you can see inserts in the form of leaves, stems, tree crowns, vines, twigs, grapes, and so on. But there are also more austere works without any additional decorations.

Green gold is a rather rare and unusual material , which is why mass production of jewelry made from it is rare. Most of the jewelry is unique handicrafts by various craftsmen, which adds even more value and exoticism to it. However, an inexperienced person can easily mistake them for jewelry, which is the main reason for the low popularity of the alloy.

Gold price

The price of this material is approximately the same as the cost of other alloys of 750 and 585 gold. According to the exchange rate of the National Bank of Russia, it is about 2.5-3 thousand rubles per gram and varies depending on the composition of impurities and the general situation on the market. In jewelry, the price of green gold will be slightly higher than yellow, white or red, since it is less common and more difficult to work with.

As part of rings, chains, pendants and bracelets, the cost of the alloy ranges from 6-7 thousand rubles per gram and more. But it is worth remembering that the price of jewelry depends not only on the weight of the metal, but also on the complexity of the work and the required qualifications of the jeweler. Gemstones or inclusions of other materials, such as platinum, can also add value.

In Moscow and Russia, it is quite difficult to find products made of green gold: the material is not very popular among the population and it is not possible to sell it profitably.

Differences from fakes

In the Russian Federation, under the guise of noble metal, they very often try to sell fakes at an inflated price.

This is due to the fact that the average consumer is poorly familiar with the qualities and properties of this type of colored gold, and therefore is not able to recognize deception.

Statistics say that approximately 4 out of 10 products are fakes, so you need to buy green gold with extreme caution. To distinguish real material from a fake, you should pay attention to the following details:

Color. Jewelry that is dominated by rich and bright shades of green is either fake or made from alloys with toxic impurities, so you shouldn’t buy them. Classic electrum has a light yellow-greenish tint, the saturation of which depends on the content of silver and copper.
Marking. The product must have a stamp mark indicating 585 or 750. If it is not there, then the data on the material used has not been verified or confirmed by anyone.
Impact resistance. Fake gold tarnishes very quickly when exposed to alcohol, iodine or even salt water, while real gold does not interact with these substances in any way.
Reaction to a magnet. The alloy should not contain impurities of iron, steel and other similar materials, therefore even a slight attraction to a magnet indicates that it is a fake.
Condition of moving parts. For items made from fake gold, they wear out very quickly and lose color, so before purchasing, you should definitely look at all their clasps, clasps, hanging parts and links.
Weight. Usually fake products are lighter than genuine ones. However, it will be difficult for an ordinary buyer without a jewelry scale to notice the difference unless we are talking about a whole bar or a very large piece of jewelry.

It is best to buy green gold from trusted manufacturers who enjoy the trust of customers. After purchasing, it is advisable to submit the metal for examination to find out the exact composition of the alloy. Only experienced jewelers who are already familiar with its properties and qualities should be trusted to make jewelry from this expensive material.

Green gold: characteristics and composition Link to main publication

Source: https://VseoMetallah.ru/zoloto/zelenoe-harakteristiki-sostav

How is green gold obtained and what is it used for?

Native green gold was known to the ancient Greeks under the name “electrum”: it was from it that in the 7th century BC. e. The first coins in history were minted. It is usually called an alloy, but in fact it is an intermetallic compound with properties similar to minerals. Silver gives it resistance to abrasion, but it remains ductile and retains a noble shine.

articles

Sample and composition
How is it used?
How not to buy a fake?

Depending on the percentage of Ag (from 10 to 40%), the color of native electrum varied from greenish and yellow-green to silvery-white. In the 19th century, jewelers learned to recreate green gold, and its classic version is now considered an alloy of 75% Au and 25% Ag.

Ring with green gold stone

Today, in store windows you can find products of the entire green range: from almost imperceptible greenish to olive green. Modern jewelers use not only silver, but also other metals as tinting ligatures. Prices for green gold depend on:

The same parameters by which jewelry made from traditional “solar metal” is evaluated - the market situation, purity of the sample.
Composition. The most expensive alloy in the alloy is palladium - a platinum group metal; compositions with the addition of silver, copper and nickel, and alkali metals are cheaper.

Combined jewelry made of colored gold are more expensive than single-color ones, since their production is a labor-intensive process. The price increases for products with precious stones and exclusive designer products.

How is it used?

Green gold based on a 585 alloy with silver and copper is similar to yellow gold in strength and ductility. Rings, earrings, pendants, chains, tie clips, brooches made from it differ only in their soft silvery-greenish glow.

Combined products made of gold of several colors or green gold of various saturations - from electrum to grassy and olive - look very elegant. It is often used to create jewelry with floral motifs, intertwining twigs, leaves, and bunches of grapes on rings, bracelets and necklaces.
The shade of metal is combined with precious and semi-precious stones in tone - emerald, sapphire, citrine, quartz.
The 750 alloy, in addition to jewelry, is used to create souvenirs: medals, corporate badges, including in combination with enameling.

Green gold ring and chains

Richly colored green gold is obtained by adding additives to it, which make the metal strong, but brittle; it is not suitable for forging a solid piece of jewelry. The parts are made by casting and used for inlaid items as overlays and exotic inserts in rings, earrings and pendants.

How not to buy a fake?

When buying jewelry in unverified places (for example, based on a photo in an online store), there is a risk of purchasing a fake, for example, made from eloxal. This alloy, depending on the coating and coloring with pigments, imitates both regular and colored gold.

The best way to protect your money is to check the labeling. Green gold jewelry is marked with a hallmark indicating 750 or 585.

Carefully examine the connection of the parts - the lock on the chain, the clasp and the links of the bracelet. On fakes, the gilding wears off quickly.
Green-tinged intermetallic compounds do not contain iron or steel, so if the jewelry sticks to a magnet, it is a fake.

Counterfeits are not resistant to chemical influences; they become dull from soap, alcohol, iodine and even sea water. But it’s still not worth testing non-ferrous precious metals with acid: intermetallic compounds are also not afraid of chemical attack.

The weight of counterfeits is lighter than precious metals, but an inexperienced buyer will notice the difference only on massive products. Therefore, if you are not knowledgeable about gold, purchase jewelry from well-known manufacturers: the nameplate of such a brand guarantees their authenticity as reliably as the hallmark.

We recommend other articles

Source: https://DedPodaril.com/zoloto/tipy/zelenoe-zoloto.html

Unusual shades of green gold

The wealth of the jewelry market inevitably leads to questions about what materials and how such masterpieces can be produced. Of course, the main groups of metals that are valued and processed by humans are gold, silver, and platinum. But even this cohort has its own varieties and subtypes, which make it possible to discover new mixtures and change ideas about things that are familiar to us. Among the rather interesting and rare precious metals is green gold.

History of the emergence of types of gold

It is no secret that gold is often used in alloys. In this case, at high temperatures, its particles are combined with a variety of additives to change the properties and appearance of the product.

As a result, the metal can be made stronger, more resistant to damage, and more durable. Externally, the presence of impurities can be determined by the shade of gold. Its natural color is bright yellow.

If the metal has a greyish, pinkish, purple, white or green tint, you have an alloy.

The peculiarity of green gold is that it was known in ancient times, in the 1st century BC. Jewelry and religious objects were made from it. The alloy included gold and silver in a certain proportion, and was called electra. Interest in such experiments with metal was revived much later, in the 19th century, and it was then that the combinations that are used in alloys to this day appeared.

Alloy composition

A metal that does not react with the environment is called precious. Various additions to gold are called alloys. They are introduced during melting.

If the number of “ingredients” exceeds 2, it is possible to carry out the melting in stages, depending on the melting temperature for each of the additives. Green gold contains about 73-75% pure yellow precious metal, as well as about 25-27% fine silver.

This is the “purest” version of the alloy. The result is a yellow-greenish color that does not have an exact color scheme, but shimmers in the light.

There are other combinations to achieve a more saturated color. If you add copper in the amount of 23% and cadmium (about 2%) to the same base 75% of gold, you get a light green color. With a base of 75% gold and the addition of 15% silver, 6% copper and 4% cadmium, a rich dark green color can be achieved. Soft is a compound of gold with 25% silver; this composition is most similar to electra, which contained a 2:1 proportion of metals.

The cadmium listed is not always used. It is a silvery-white soft metal that is often used in chemical reactions. It lowers the melting point of metals.

It is worth considering that it can be dangerous to humans; inhaling its fumes can be fatal. However, when it is used in jewelry making, there is less to worry about.

But it is worth understanding that it is a carcinogenic substance and tends to accumulate in the body. The most common combination without toxic cadmium is with 20% silver and 5% copper.

Alloys of gold with additives are called metalloids. As a rule, it is an alloy of 18-karat green gold. Adding nickel to gold produces a durable and beautiful material, but causes allergies in 2-3% of people, so this method is considered less cost-effective.

Other materials can be used as additives - rubidium, zinc, alkali metals. They give the material an unusual color, but are not recommended for use due to toxicity.

Some of them are harmful to the skin and therefore are prohibited for use in jewelry, remaining a decorative element only in some countries and in small areas of the product that are not tightly adjacent to the skin.

General requirements for a group of metalloids

Since there are many variations, green gold has its own number of restrictions and requirements for the quality of raw materials. First of all, we are talking about human safety, therefore, from the main types used in jewelry, those that cause allergies and react with oxygen or other substances from the environment are excluded.

THIS IS INTERESTING: How to determine how many grams of gold are in a ring

Secondly, it is very important how the metal behaves in everyday use. It must be flexible enough to bend and be subject to torsion and decorative curves, but hard and durable enough to hold the shape of the polish.

Alloys that do not comply with these points can be used in small quantities as an external insert for a particular object.

You can also look at green gold in photographs in various catalogues, but only “live” can you notice the beauty of the shimmer and the originality of the material. In addition to 750, the use of 585 is also allowed; you can verify the number on the jewelry stamp. If we take the carat as a unit of measurement, the indicators can be 10, 12, 14, 15, 18. To determine the price, gold is measured in grams.

Cost of rare goods

Gold prices depend on the situation on the stock market, the purity of the sample and the quality of its components in the alloy. When it comes to additives, palladium is the most expensive, followed by silver, copper, nickel and other additives.

Compared to other non-ferrous metals, green gold occupies one of the top positions in terms of cost. This is because it is rare, fashionable and allows you to create beautiful jewelry. On average, a 750 sample product costs at least 5 thousand rubles per gram.

It is used to make rings, earrings, chains, pendants, brooches, bracelets, cufflinks, clips, and is used to decorate wristwatches, combs, and medallions. Something green from a number of precious stones looks best with this metal; gold emphasizes the depth of the color of the emerald, the play of light in the facets of quartz.

Its small inclusions will help create floral motifs in massive rings, rings, and pendants. For a jeweler, green gold is a real find, the price of which justifies the result of his work. For a woman - a beautiful gift that can become a talisman. For a couple, it is a symbol of their love in the form of wedding rings.

Source: http://golden-inform.ru/proby/zelenoe-zoloto/

Green gold: what is it, composition, what is the purity, how much does 1 gram cost today?

Welcome!

Green gold is one of the most unusual alloys, but at the same time its composition is considered standard. The original color is achieved by adding impurities in special proportions. In this case, the shade of the finished product can vary from subtle light to rich dark.

What it is

Green gold, or electrum, is an alloy to which metals are added in a special proportion to give it a greenish tint. This can be achieved in various ways, but not all of the resulting compositions will be suitable for jewelry. To do this, they must have a number of special properties:

Inertness so that the alloy does not react with most chemicals and does not oxidize in air.
Plasticity to give the metal the desired shape in the future.
Durability so that the finished decoration does not crumble from a slight blow.
Hypoallergenic. Wearing a ring or earrings is not accompanied by itching and the appearance of red spots on the skin.

Due to the need to adhere to these rules, jewelry workshops in Europe and Russia were forced to abandon the use of rubidium and cadmium in production.

The first was discarded because it quickly loses its structure under the influence of oxygen, the second because of its high toxicity.

Composition characteristics and properties

According to Russian standards, a pure green precious metal is an alloy containing 25–27% silver and 73–75% gold. However, several other compositions are also allowed, which differ in color saturation:

ZlSr 585-415: 58.5% gold, 41.5% silver;
ZlSrM 585-300: 58.5% gold, 30.0% silver, 11.5% copper;
ZlSr 750-250: 75.0% gold, 25% silver;
ZlSrM 750-150: 75.0% gold, 15% silver, 10% copper.

Colors

The shade of electrum can vary, but light green tones still predominate in jewelry stores. They look as natural and attractive as possible for most buyers.

The presence of copper in the composition provides a combination of yellow and green colors. The more impurities, the more clearly the contrast is visible.

However, the use of copper also has negative sides. Alloys based on the yellow noble metal with silver themselves have low strength and ductility.

With the addition of copper, these indicators deteriorate even more. As a result, the decoration becomes fragile and crumbles.

What is the purity of green gold?

In our country, electrum is presented in two hallmarks: 585 and 750. Gold leaf, used for gilding, belongs to a separate category. It is marked with 960 breakdown.

Application of this alloy

Jewelry of 585 standard with the addition of copper and silver is used by jewelers to make women's jewelry and tie clips. The resulting products attract the eye with a soft silvery-greenish glow.

To create original and unusual jewelry, they combine electrum with different ligature contents. As a result, the structure can shimmer with a whole spectrum of different shades of green. You can also often find similar jewelry interspersed with precious stones.

750 standard green gold is used to make both jewelry and a variety of souvenirs.

Advantages and disadvantages

The main advantage of electrum is its original and unusual appearance. However, this alloy has more disadvantages:

Electrum is too fragile to be worn daily.
The process of making jewelry is more labor-intensive compared to classic yellow alloys.
High price.

How much does 1 gram of green metal cost today?

The price of 1 gram of electrum is higher than that of yellow gold. This is due to difficulties in manufacturing. The cost is also affected by the fact that non-ferrous precious alloys in Russia and neighboring countries are still new and exotic.

Price for 999 standard according to the Central BankMarket value of the standard todayPrice for scrapPrice in jewelry

Recommendations for care, cleaning and storage

Jewelry made from green precious metal must be handled much more carefully than similar products made from yellow metal.
And if the latter can be worn every day, then electrum is more suitable for special occasions. Any physical stress on the metal destroys the structure of the alloy. It must not be dropped, hit, crushed, etc.

Tips for choosing green gold jewelry

When wanting to decorate yourself with an unusual item, you take into account not only the aesthetic appearance of electrum products. Non-ferrous metals are counterfeited almost more often than classic yellow, and therefore it is important to know how to determine the authenticity of the jewelry you like.

How to recognize a fake

Most often, fake green jewelry is sold through online stores with a dubious reputation. It is impossible to recognize the degree of nobility of a metal from a photograph, and therefore experts advise making such purchases in jewelry stores. But even in this case, you must follow several rules:

The jewelry must have a 585 or 750 hallmark.
If you apply a magnet to a product and it sticks, what you see is not a noble metal, but ordinary steel.
On fake jewelry, the gilding first comes off at the joints. When purchasing, be sure to carefully inspect the clasps, links and clasps.

Reviews

Caroline:

“My husband gave me a set of green gold jewelry for our wedding anniversary. Indescribable beauty. I wear it on holidays, and the effect is always stunning.”

Victoria:

“They gave me a green bracelet and earrings. Until they explained what it was, I thought it was ordinary jewelry.”

Anya:

“I already have a collection of green gold jewelry. Of course, they need good care (so as not to knock or spoil them with some kind of chemical), but it’s worth it.”

Conclusion

Purchasing green gold jewelry will help make your look charming and unique. In addition, with proper care, the noble metal will serve no less than the yellow alloy.

Do you know about other varieties of colored gold? Subscribe to our accounts on social networks and become an export among your friends and acquaintances.

Source: https://zhazhdazolota.ru/vidy/zelenoe

Green gold: what is it and what does it look like?

Today, jewelry has reached a certain level of skill in the production of gold of various colors and shades. Of course, jewelry from such materials is not made in large quantities by stamping at a factory. These are, rather, exclusive jewelry from a small jewelry shop, where all the details are made by hand, just like many centuries ago.

Properties of green gold

What is green gold, first of all? In addition to the traditional yellow aurum, known to everyone since school, skilled craftsmen have learned to combine several elements to obtain an unusual color.

And although green gold has been known since time immemorial, in the understanding of buyers it remains a curiosity. First of all, this is a piece of jewelry of an unusual color.

Interestingly, by applying different ligatures to the noble solar metal, different shades of green can be obtained. Green gold can be in the following shades:

soft green (contains aurum, argentum and nickel);
olive (based on aurum, argentum, a small part of nickel and copper);
rich emerald (a combination of aurum with argentum, a small proportion of copper and rubidium);
light green (three quarters of aurum and a quarter of argentum);
yellow-green shades (three quarters of aurum, a tenth of copper, the rest is argentum).

As you can see, mostly green gold of different shades contains ordinary gold and silver in varying proportions with the addition of small amounts of rare earth metals.

Rubidium makes jewelry quite fragile, so it is very rare to find a piece of rich emerald green color. Previously, to obtain the unusual green tint of the noble metal, cadmium was also included in the composition, but due to its toxic properties, it was banned from alloying in many countries.

In world practice, such precious material is divided into different samples from 10 to 18 carats; domestic jewelers use precious metals of 585 and 750 samples or 14 and 18 carats, respectively.

Hallmark 585 implies the production of the following jewelry for women and men:

sets of rings, earrings, bracelets and chains;
various medallions, brooches, pendants;
cufflinks, clips, watches;
ritual items – crosses and wedding rings.

Sample 750 implies the release of:

jewelry according to 585 standard nomenclature;
souvenirs, medals and badges;
jewelry with enamel.

Green gold color may vary. The most common precious metal is a light, soft green tint.

It does not fade or fade and looks unusual. Naturally, photographs of products on Internet portals cannot convey the subtlety and amazing shade of this unusual decoration.

History of origin, application and cost

The shine of the solar metal has been known to all peoples for a long time. However, its natural softness makes it impossible to create jewelry from pure material. Jewelers have learned to strengthen it by alloying. During such experiments, a lot of metals of unusual colors appeared.

Despite its limited distribution, green gold has been known to mankind for a very long time. Historians believe that it was first used in Crete 2 thousand years BC. The soft green alloy was used to make jewelry and objects for religious practices. At that time it was called electrum. Money of a characteristic yellow-green color was also minted from it. These coins of King Croesus have survived to the present day.

Electrum was obtained by fusing Mediterranean precious metals. The bars included gold, silver and copper, and the percentage composition of silver could be almost half. In our country, green gold is not very common, probably due to prejudices that only yellow color is inherent in the noble metal, and everything else is costume jewelry. But green gold is in high demand around the world.

Due to its fragility, this type of precious metal is used for inserts as an element of decoration, for example, in floral motifs.

Nowadays you can often find a product combined from several types of multi-colored gold. Such products are bright and noticeable.

Jewelry of this type is not mass produced, and therefore their cost is higher than market prices. This type of precious alloy, in an elegant solution, favorably emphasizes the beauty of transparent jewelry stones.

An unusual appearance, the craftsmanship of the author, the original jewelry materials, the time to create the alloy, the original and exclusive form of the jewelry - these are the components of the price of green gold. Compared to traditional yellow, its price is much higher, about one and a half to two times. So, for example, one gram of exotic 585-carat green gold will cost 6,000 rubles, and the same weight of 750-carat gold costs 7,000 rubles.

As a result of the painstaking work of jewelry craftsmen, unsurpassed precious metals of the most incredible colors appear. They are expanding their range of high quality designer jewelry. Over many centuries of jewelry traditions, which have their own standard values, innovative ideas are born that are deservedly popular among owners of unusual jewelry who are not afraid to experiment.

Source: https://gems-and-jewels.ru/chto-takoe-zelenoe-zoloto.html

How green gold is obtained: price per gram

What is green gold? This is a unique precious alloy, it is characterized by special grace. Products made from precious metals are practical and durable; under normal conditions, they do not react with acids and alkalis. Gold in its original form is soft, fragile, and can be easily scratched. In its pure form, noble metal bends easily and loses its shape. Harder materials include copper and silver.

Varieties of gold and a little history

The greenish precious metal is called electrum and is an alloy of gold and silver. Jewelry with electrum beret appeared in the 1st millennium: it is known that the Scythian pectoral contains a certain amount of this mixture. Soon after D.I. Mendeleev’s table was discovered, jewelry craftsmen began experimenting with precious metals.

This is how we managed to obtain green gold and many other types of metal, including:

olive – an alloy with potassium;
violet containing aluminum.
dark green – with rubidium and other impurities;
white - containing palladium and platinum.

All so-called metalloids contain impurities - ligatures. In the twentieth century, craftsmen began to mix additives and obtained white, purple, blue, and green gold. White is often compared to platinum as it imitates this material. Alloys containing gold are brittle and generally non-ductile. Metalloids, including green gold, are 750 fine. They are inert, plastic, durable and saturated.

Products made from precious materials

High-quality craftsmen use various valuable metals. Green gold is used to create sophisticated plant elements.

Such products are expensive, and they look amazing! Blue alloy is also used to create sophisticated jewelry. Metalloid 755 has a rich greenish tint: it contains a certain amount of silver, cadmium, and red copper.

In order to create it, it is necessary to use different temperature conditions. It is worth noting that melting is carried out in stages.

Green gold is unique and is used to frame precious stones. Due to the specific composition and special melting technology, it is fragile. The alloy may contain silver, copper, cadmium, and in different quantities. The presence of impurities determines the chemical properties of a given metalloid. If zinc, potassium and some alkali metals are present, the metalloid will irritate the skin (such jewelry is not produced in European countries).

What is green gold? This is a beautiful, rare and at the same time sought-after alloy. As for the cost, it is slightly overpriced, but this is due to the rarity and unusual nature of the metalloid. Experts are developing techniques to help obtain various metalloids. We might see a purple alloy soon.

THIS IS INTERESTING: How can you recognize white gold?

A piece of jewelry is valued not only for its chemical composition: the work of the master deserves special attention. Originality plays an important role: the more complex the jewelry and the smaller the number of pieces of jewelry, the more valuable it is.

To date, 10 metalloids belonging to sample 750 are known (different alloys are used to create non-ferrous metalloids).

The beauty of green gold is beyond doubt. This metalloid must be inert from a chemical point of view and plastic. Rubidium can give a metal a beautiful hue, but is toxic and quickly reacts with oxygen. This chemical component is not added to alloys; bracelets and rings are not made from it. The bad properties of rubidium are that it irritates the skin.

Nickel can be used to produce a metalloid, its characteristic feature is strength. Precious jewelry with the addition of nickel is highly durable, moreover, it is excellent for polishing. In its original form, gold should stretch and withstand twisting. Thus, it is important that the precious product is not only beautiful, but also environmentally friendly.

Buy jewelry from reliable, trusted suppliers.

Source: https://ToZoloto.ru/o-zolote/tipy/zelenoe-zoloto.html

Composition, properties and applications of green gold

Green gold is one of the unusual and at the same time standard alloys of the noble metal. It all depends on the ligature; some green gold products have a rich color, others only a greenish tint. This factor directly affects the cost of the product. Green gold gives things charm and unusualness.

History of the alloy

According to historians, the birthplace of green gold is the island of Crete. Around the 1st–2nd millennium BC, they learned how to produce such an alloy. At that time it was given the name electrum. Green gold was an alloy of gold and silver and was used to make a variety of jewelry and religious objects.

Green gold ring

Electrum is also a type of native gold that was common in the Mediterranean. Its silver content reached 10–40%, and copper was also present in small quantities. Of the products made in ancient times from this alloy, the coins of King Croesus have reached us, as well as some elements of Scythian jewelry, for example, the legendary pectoral.

What does it represent?

The only clear answer is this: it is an alloy of 750 or 585 gold with other metals that give it a greenish tint. There can be many such metals, therefore, in order to be called gold and be used in jewelry, they must meet certain requirements:

the alloy must be inert, not oxidize in air and not react with substances, with a few exceptions;
be flexible and also withstand certain types of stress that create internal stress, such as stretching and torsion;
have hardness so that the edges remain polished;
do not cause allergies.

These conditions immediately eliminate the two metals that give gold its truly green color: cadmium and rubidium. Rubidium is not suitable due to its chemical properties. For example, when it reacts with oxygen, it flares up. When alloyed with gold, it produces a metal that is too brittle to be used in jewelry. In addition, it can sometimes cause irritation upon contact with the skin.

Cadmium is not suitable due to its toxicity, therefore in Russia and the European Union it is prohibited to use it as an alloying metal. It should be noted that in some other countries it is legal to use cadmium to make jewelry. It is a silvery-white metal that causes a decrease in the melting point of metals and is often used in chemical reactions.

When inhaling vapors, a person can receive such a level of toxic substances that can even lead to death. When used in jewelry, it poses a greater danger when making jewelry than when wearing it. However, cadmium also accumulates in the body and is a carcinogen.

Compound

Standard green gold contains about 73-75% of this metal and 25-27% of silver, this is its “purest” composition. In the Russian Federation, there are GOST standards that allow several options for obtaining green gold. The result is not a saturated color, but a kind of yellowish-green tint that shimmers in the light.

In countries where the use of cadmium is permitted, it is added in the following proportions:

23% copper and 2% cadmium. This alloy turns out to be light.
When adding 15% silver, 6% copper and 4% cadmium to the same amount of base metal, the color turns out dark.

Russian GOST regulates four grades of green gold:

ZlSr 585-415, contains 41–41.5% silver.
ZlSrM 585-300, contains 29.5–30.5% silver, as well as copper.
ZlSr 750-250, contains 24.5–25.5% silver.
ZlSrM 750-150 contains 14.5–15.5% silver, the rest is copper.

Alloys in which copper is present have a greenish-yellow color; if silver alone acts as an alloy, gold is saturated green.

Decorations

Such gold is not in great demand in our country. The reason lies in stereotypical thinking. Residents of the post-Soviet space often have the opinion that this noble metal should be yellow or have a slightly reddish tint. Other colors, including even white, are associated with jewelry. This is especially due to the fact that not everyone around will be able to understand that the product is made of gold, which, as it were, reduces the status of its owner.

A variety of jewelry is made from it, using the metal both to make the entire product and in the form of small inserts. Unlike other unusual flowers, it is malleable and malleable to produce a wide variety of shapes. If green gold is used, then it is used only as inserts, since its characteristics are low; in addition, it can be toxic or cause allergies.

Often on the jewelry market you can find jewelry that is a combination of two or more alloys. Pairing regular gold with an alloy or intermetallic of a different color, especially those that contrast with each other, makes jewelry brighter and more attractive. Since such a process is costly and more labor-intensive, jewelry is more expensive.

The price of gold jewelry corresponds to that with a green tint, of course, if we are talking about alloys that are made in accordance with GOST standards. If other metals are used or the production technology is different, then the price increases accordingly. Often jewelry is complemented with natural stones such as diamond, emerald, Dresden diamond or demantoid. Such jewelry can be much more expensive due to the high cost of these stones.

Green gold looks great in jewelry of any kind, earrings, bracelets, rings and others. It makes the image unusual, although, unfortunately, it is not suitable for everyone and not for any color of clothing. But the jewelry is rare and has its own zest. Buying green gold is recommended for people who love everything unusual, but at the same time high-quality.

Source: https://HochuZoloto.com/splavy/zelenoe-zoloto.html

Green gold: characteristics and properties of the alloy, its composition and use in jewelry | mk-soyuz.rf

Such gold is used both for the manufacture of entire jewelry and as a material for decorative inserts in them.

Green gold

Green gold is produced by adding silver or other metals to an alloy. The color of green gold, in most cases, does not have a rich tone; rather, it can be described as yellow, with a green tint. The higher the percentage of silver in the alloy, the duller the color becomes. If the silver ratio exceeds 30%, the metal completely turns silver, with the inclusion of a greenish tone. Such gold is often found in natural conditions and is called “electrum”.

Green gold properties and characteristics

Gold acquires grassy tones due to inclusions of the following metals:

Silver.
Cadmium.
Copper.
Zinc.
Potassium.
Rubidium.
Nickel.

The color saturation of green gold directly depends on the ligature used. The metal gets its light greenish tint from alloys: silver, potassium, nickel, zinc and copper. Additions of rubidium and cadmium give the gold a rich, bright green tone.

Despite the fact that green gold is very elegant and looks great in combination with any precious mineral, not all of its alloys are safe for the human body. So the precious metal, in combination with cadmium, is very toxic. It is not used in the jewelry industry in the Russian Federation and in most European countries.

There is no jewelry made of rich green gold in our country. For example, rubidium, which gives the alloy a bright grassy tint, turns it into a very fragile material that is not practical for daily wear.

A green precious metal, it is characterized as brittle, crumbly and difficult to process. For the most part, it is used by jewelers as additional decorations to the main product. The strongest metal is obtained in combination with silver, and only with strict adherence to proportions.

Jewelry requirements

Processing green gold requires high-level craftsmanship, patient work, knowledge and experience from the jeweler. That is why jewelers have certain requirements for this capricious alloy.

First of all, the metal must be passive to chemical reactions with air and other substances that are easily accessible to the average person in everyday life. For example, gold in combination with rubidium or cadmium has a negative impact on human health and can even leave a chemical burn on the skin.

Green metal must have sufficient ductility and resistance to mechanical stress. Otherwise, the jewelry will turn out to be very short-lived. The alloy must also have sufficient hardness to successfully undergo jewelry processing.

Very rarely, jewelers can use nickel as a ligature to obtain a precious green alloy. This metal simultaneously gives gold the strength needed for processing and a grassy tone. But when wearing such jewelry every day, there is a small percentage of the likelihood of allergic reactions.

The history of green gold

Man learned about green gold several thousand years before our era. The ancient peoples of the island of Crete mined this unusual ore, and then made it into jewelry, objects symbolizing religious idols, and much more.

The precious green ore found by ancient people was called electrum. The composition included gold, silver (the ratio of which varied from 40 to 10%) and copper.

Green gold was also mined in ancient Lydia. There, wild ore was smelted into coins of the ruler Croesus, which had a yellow color with a greenish tint. Archaeologists date the origin of this money to the 6th century BC.

The idea of artificially recreating a noble green metal came to the minds of scientists already in the 19th century. It was then that all sorts of variations of alloys were developed, giving gold a grassy shade.

Green gold hallmark

Jewelry made from precious green metal is mostly 750 or 585. Alloys included in the alloy transform into a liquid state at different temperatures. Consequently, the alloy manufacturing process takes place in several steps.

In the karat system, precious metals are assigned markers: 18, 15, 14, 12 and 10.

The standards of the Russian Federation regulate four types of green gold, which are represented by the following alloys:

585 standard: gold 58.5%, silver 41.5%. Has a green color.
585 standard: gold 58.5%, silver 29.5%, copper 12%. It has a yellow color with a green tint.
750 standard: gold 75.5%, silver 24.5%. Has a green color.
750 standard: gold 75.5%, silver 14.5%, copper 10%. It has a yellow color with a green tint.

In Russia, both grades of green gold - 585 and 750 - are used only in the jewelry industry. 585 standard is used exclusively in the manufacture of jewelry: pendants, earrings, chains, bracelets, watches, cufflinks, tie clips, brooches and much more. 750 standard is intended not only for the manufacture of jewelry, but also souvenirs. Also great for precious items with enamel coating.

Green gold jewelry

In the Russian Federation, at this point in time, green gold still remains unrecognized by the consumer. Russian people are very accustomed to the idea that gold is necessarily a yellow or reddish color. Many of our compatriots believe that jewelry made of multi-colored gold resembles ordinary costume jewelry in its appearance. But such an opinion is far from the truth and completely goes against modern trends in jewelry fashion.

This noble metal with a light grassy tint is used by skilled jewelers to make chains, bracelets, pendants, earrings, rings, brooches, cufflinks and tie clips. Metal of a bright green tone, due to its fragility, is partially included in jewelry. It is used to make decorative inserts in earrings, rings, pendants and much more.

The alloy is green in color and has an exceptional quality that blends harmoniously with any metal. So, in company with gold of a different shade, it turns jewelry into a real embodiment of sophistication and beauty. However, making such products costs a lot of work for the craftsman. That is why their price is much higher than that of jewelry made from a homogeneous metal.

Green gold price

The price of green gold, in most cases, is identical to the cost of the classic yellow, red or white precious metal. More expensive jewelry are designer delights, with the inclusion of precious natural stones.

The market price of one gram of green gold today, in 750 purity, is 2,010 rubles, scrap value is 1,809 rubles, the price per gram in jewelry is from 4,500 rubles. The cost of 585 green gold is from RUB 1,111.5.

The latest developments in green gold production

More recently, English scientists have discovered a method for making green gold without resorting to alloys. Optical research played a significant role in this discovery.

During the production of green metal, its surface is given a relief structure. The greater the ratio of the area of the ingot and the number of its irregularities, the more the reflective and refractive characteristics of the precious metal change. Depending on the surface structure of gold, a person begins to see it as green, blue, red or pink.

This technology is not yet perfect, and is currently only applicable to large-sized gold products or bars. But when processing metal with a large area, it really works wonders. Using this technology, gold can acquire not only a uniform color of any shade, but also become multi-colored or patterned.

Source: http://lombardyinfo.ru/stati/zelenoe-zoloto.html