325th hallmark: gold or silver alloy, composition, properties, cost per gram and rare use by jewelers today

Pure Gold is not used in jewelry, because it is soft and quickly loses its shape under the influence of mechanical stress. This explains why all decorations (ancient and modern) contain additives. They increase the hardness and plasticity of the material. An assortment of jewelry containing precious metalThe number of types of products is constantly increasing - alloys with different ratios of ligatures are being created. One of the options is 325 Sample. Its appearance on the market is still a mystery. There are many versions of the origin of this metal, but not all of them explain the unusual composition and properties of the material.

325th hallmark - what kind of metal is it: gold or silver

In fact, there is nothing supernatural about it: alloy man-made, exhibits characteristics peculiar to the valuable materials. But the metal, which received a value of 325 when pierced, is still very different from other types. This is due to its composition. According to the metric system, the lowest is assay 333But even it is not always specified in the tables.

The most simple in composition today is considered to be gold alloy 375.

Gold and silver
Gold and silver alloys

All three variants differ from each other in terms of gold content:

  • Sample 325 - 32.5% of the precious metal;
  • 333 - 33.3%;
  • 375 - 37.5%.
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In jewelry, only the last variant, 375, is used. The 333 variant is practically never used. This is due to the low content of the precious metal. A special position is held by gold of 325th hallmark. According to the normative documents, the hallmarking of jewelry is made on condition that the content of the precious metal exceeds 30%.

Theoretically, this fact allows us to consider the 325 alloy valuable, albeit to a lesser extent than all the others. But in fact there are a number of features that do not allow us to classify the metal as precious. If we look into these contradictions, we can make several conclusions:

  • Alloy 325 is low-grade gold;
  • contains a minimum amount of precious metal, which does not allow its use in jewelry, but makes it possible to create jewelry that is equal in appearance to the precious ones.

Important: According to the standards of Russia, Belarus, Ukraine, Kazakhstan, the material with the mark 325 cannot be classified as gold alloys.

333 gold hallmark
Gold 333 pr.

Sample 325: mysterious alloy and properties

The exact composition of the precious metal in this category is not named, because it may be different: it differs in the ratio of components, their type. Among the main, most commonly used are called:

  • copper;
  • tin;
  • nickel;
  • lead;
  • silver;
  • platinum group metals (e.g., palladium, but in small amounts).

As for properties, jewelry made of an alloy with a minimum content of precious metals is also characterized by contradictory characteristics:

  • jewelry is worn well, but has a limited lifespan;
  • The precious metal is sufficiently strong, wear-resistant, which is due to the small content of gold;
  • the product of this type loses its original appearance, because the main components react with chemicals that contain sweat, cosmetics, household cleaning products, etc.;
  • jewelry is pleasant to wear, due to the low weight - the earrings will not pull away earlobes, and the chain - to put pressure on the neck;
  • In terms of appearance, products are often not inferior to precious, because they are composed of different components, their combination allows you to get a color close to gold, the shine is also present.
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325 gold
325 gold ring

Does 325 silver exist?

Considering that specimen metal 325 with a great stretch can be attributed to the precious - gold-containing, albeit low-grade, many find enough reason to classify it as a silver alloy. But in this case there is even more controversy:

  • According to GOST R 51152-98, the designation of silver jewelry begins with 800Therefore, precious metal 325 cannot be considered valuable;
  • в alloy composition 800 includes silver and copper in the ratio 80% to 20%, if we take the same logic, we can assume that the metal 325 contains a small portion of silver, and the main share is copper - 67.5%.

Changing the composition (increasing the content of red metal) leads to serious deviations from the basic parameters normalized by GOST:

  • finished products lose strength, which is due to a decrease in density, the same result can be obtained by adding tin, nickel, zinc;
  • It will be difficult to process the material with cutting tools;
  • The hue of the copper-based precious metal (assumed 325 proof silver) changes to yellow-orange, salmon-colored.

Considering all of the above, it can be argued that there can be no silver of 325 proof. The probability that the material contains a small fraction of gold, much higher.

Ring with stone
Silver Ring

Ambiguous opinion on the status of 325 gold

StampingIt is not always the case that the metal belongs to the precious metals, as it contains a certain combination of numbers. It happens that ring stamping or earrings are performed by crooks. In this case, the product is positioned as valuable, but in fact is not. To understand which of the options is correct when studying the properties of 325 proof metal, it is necessary to consider different options.

Low-grade gold

The arguments above make it impossible to classify the metal 325 as a gold alloy of value. If a certain amount of gold (32.5%) is included, this is still not enough for jewelry applications.

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Tibetan Silver

It is known that previously an alloy containing a small amount of precious metal was used. In Tibet, it was used for the production of jewelry. The technology of obtaining the low-grade material has survived to this day.

It is just used to make jewelry of low value.

Tibetan Silver
Tibetan Silver Beads

Alloy with gilding

Given the contradictory properties of the metal with the mysterious designation 325, many believe that it is a simple alloy with gilding. But in this case, there will be no branding on the product, although in appearance the ornament has much in common with valuable products.

Gypsy Gold

When there is a mark on the metal, it explains why many buyers immediately perceive the jewelry as if it contains a precious metal and is especially valuable. In fact, this is a trick used by crooks who sell a low-grade alloy for the price of an expensive metal.

It is believed that the 325 mark is put on such items for the purpose of deception. The material is even called gypsy. However, even here there is an inaccuracy. The gypsy gold corresponds in composition to the precious 375 standard, though it is the least valuable among those used in jewelry.

Gypsy Gold
Gypsy Gold Ring

Alloy of copper + silver + gold

The use of small amounts of gold and silver produces a costume jewelry alloy. It has no value to jewelers, but in appearance it resembles a precious metal. This kind of alloy is called a tween alloy. This means only one thing: there is not enough gold in the alloy, but it is there.

Such a feature makes it possible to obtain attractive products. They are distinguished by their higher durability.

Correspondence to carats

Many speculate that the 325th assay is the result of the transfer from the carat to the metric system of assaying. In order to believe the version, it is necessary to make a simple calculation:


where X is a sample of the metric system,

Y is the stigma of the carat system.

As a result, you can get the answer - 7.8 carats. If you study the normative documentation, it turns out that there cannot be such a mark, which means that it must be rounded upwards to 8. But this value corresponds to another mark - 333.

So, variant 325 does not meet the foreign standard, not quoted in the world market.

Swiss gold bars
Gold bars

Exchange rate of 1 gram of gold

The price of precious metal is subject to change and depends on many factors. Among the main ones is the exchange rate:

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branded 999 (Central Bank of the Russian Federation), rubles.Market price, rubles.Metal for scrap, rub.Jewelry stores, rub.

But this is the cost of valuable metal. Alloy 325 does not contain enough gold. Accordingly, it is worth tens and sometimes hundreds of times less.

325 proof silver price per gram

The cost of the material is low, which is due to the low content of precious metals. An approximate price can be determined using the formula:

Exchange rate of the Central Bank (stigma 999) x 0.325 = the price of the alloy 325.

Given that today the Central Bank exchange rate is 63 rubles, we can find out the cost of the alloy 325 - 21 rubles.

Silver 1 gram
A gram of sterling silver

Nominal and actual value of the sample 325

When 325 proof gold is considered, the price per gram in rubles obtained by calculations will in any case be higher than the actual value. This is due to the fact that the formulas are developed for the precious metals. The material stamped 325 is not one of them. For this reason, it is necessary to be guided by market prices for similar products.

Is it possible to find low-carat gold today and where to sell it?

In Russia, you can buy and sell jewelry with the 325 mark via the Internet, by advertisement, at markets. Another option is in hot countries (Turkey, Egypt). You should not take such metal to a pawnshop for sale; they will not accept it. Likewise, there is no risk of purchasing items marked 325 in such organizations. Alloy is found quite often, although it does not represent any particular value, but before buying it, you should carefully inspect the costume jewellery: there should be no scratches, irregularities and other defects.

How to check the authenticity of jewelry and determine the sample

It is necessary to be guided by a number of attributes:

  • valuable metal is stamped: - above 375 (gold), from 800 and above (silver);
  • The alloy containing precious metals has a special luster (gold and platinum give a brighter shine than silver);
  • valuable jewelry is heavier than costume jewelry.
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By these signs you can distinguish gold and silver alloy from plain material, as well as between caps (stamped 325).

Gold Authentication
Checking gold

325 gold applications

Despite its modest properties, the metal is used in various fields:

  • production utensilsThis possibility is due to the high thermal conductivity;
  • Production of household items, interior;
  • lighting fixtures;
  • ritual products.

Because of the small amount of silver, the metal quickly loses its attractiveness - a green stain appears.

This is an oxide film formed by oxidation of copper.

Video: low-profile jewelry, what it consists of and how much it costs

Subject: Q&A

Is 325 proof silver available in nature?

Opinion of an expert
Mikhail Petrovich Grishanov
Jeweler, Director of Grishanov & Co.
With the designation 325 there is only a low-value alloy - interstitial. There is no such thing as 325 proof silver. It is easy to remember, because in jewelry, this kind of metal is used with the designation on the stamp - from 800 possibly higher.

I found an old blackened ring at my mom's house, how can I tell what kind of metal it is?

Opinion of an expert
Pribrezhny Gennady Valentinovich
6th class jeweler
Sometimes there are pieces with an unusual mark, 325. This suggests a rare stroke of luck, as if a precious piece of jewelry had been found at a low price. In reality, an alloy with such a marking has a low value for the jeweler, but because of the small amount of precious metals it is used for the production of costume jewelry with the appearance of a gold item.

Is 325 proof silver good or not?

Opinion of an expert
Mikhail Petrovich Grishanov
Jeweler, Director of Grishanov & Co.
The less gold, silver in an alloy, the greater its strength. From this point of view, alloy 325 is good, withstanding the load better than a metal containing gold in larger amounts. However, it is not classified as valuable. Nor is it silver in the full sense of the word.

Jeweler's comment

Molokanov N.M.
Molokanov N.M.
Jeweler, experience in jewelry manufacturing 26 years.
The material, called precious, stamped 325, contains a substantial proportion of additives, such as copper. According to customer feedback, I know that such items are cleaned with quite aggressive agents. But I do not advise this, as copper is covered with scales under the influence of various factors. It is better to avoid exposure to acids, abrasives. If you regularly use special wipes for jewelry, you can increase the short service life of the items.
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