Gold jewelry will never cease to be popular. Products made of precious metals are durable and attractive, especially if they are made of alloy 585. In its features, we will understand in today's article.
What it is?
Sample means the percentage of gold in the alloy.
This means that the 585 test indicates that 58.5% of pure gold is in special jewelry raw materials, and everything else is auxiliary additives.
Often metal with a breakdown of 585 on it is called pure gold. In the past, royal chervonets were prepared from it. Since the coins of pure metal were soon subjected to abrasion, we decided to make wear-resistant raw materials. This is exactly how the “prototype” of the current 585 gold sample turned out.
History of occurrence
585 gold test appeared not so long ago, it gained popularity in 1994.
The new test became a replacement for the current in the USSR 583, introduced in 1927, at the same time with fixing a special system for measuring alloys of a precious category.
The reason for such changes was the fact that gold of domestic origin was valued much lower than the same 14-carat alloy in Western countries. Then they decided to increase the volume of pure gold by 0.2%, so that the resulting products would fully meet all accepted international requirements.
Advantages and disadvantages
To date, gold products from 585 samples are recognized as high-quality, so they can be found in all jewelry stores. The demand for this alloy is explained by the advantages that it differs.
- Alloy 585 is characterized by sufficient density, which is enough for durable and attractive jewelry of various types.
- If we compare the price of these things with specimens of high-grade alloys, then it will be more democratic and attractive.
- Alloy 585 of the sample demonstrates high plasticity and suppleness, therefore, it is possible to make jewelry with various artful patterns and decorative inserts from it.
- A considerable share of the ligature in the composition of gold jewelry makes it possible to achieve all sorts of interesting tones.
Matter 585 does not “suffer” from serious flaws. But some are worth mentioning.
Due to a certain percentage of the ligature in the composition, similar material may begin to darken or stain over the years.
On the surface of the jewelry of the sample in question, scratches and other similar damages quite easily remain.
Composition and properties
The alloy, marked 585 breakdown, contains 58.5% pure gold as a percentage. The specific gravity of gold is expressed in grams per cubic cm, and this figure is 19.3 g per cubic meter. see. The remaining 41.5% is assigned to such a component as a ligature. An additional element makes up for the missing strength and density of raw materials, helps to reduce the total cost of gold products.
The main elements that make up the ligature are silver and copper. It is much less common to find products from formulations in which platinum, silicon or nickel play the role of additional inclusions.
They are mainly used to create beautiful white gold. After a certain number of years, jewelry made from gold of 585 tests is able to change the original color and even become covered with noticeable spots. However, this process takes not a day, not two, but many years. If you provide the product with competent regular care, then you may not encounter such a problem.
Alloy density values range from 12.8 to 14.76 g per cubic centimeter. These values depend on the composition of the ligature.
Gold alloys are made more durable due to the copper that the ligature contains. The higher its percentage in percent, the more resistant to friction is the jewelry. For example, pure gold. Copper is included in its composition in large quantities, it is more durable and strong than the classic yellow or white material.
However, this alloy may become scratched or traces of friction over time. Keep a good and fresh look of products will allow careful wearing and storage.
As for the melting temperature of gold 585, it turns out to be insignificant. Because of this, the resulting products can undergo repeated melting, including at home. For gold, the indicator in question is 940 degrees Celsius. This value not only significantly simplifies the manufacturing process, but also reduces the power of the necessary furnace.
Shades and brand
The natural color of 585 gold is bright, sunny yellow. However, the presence of different types of ligatures in the composition can make its own adjustments, giving the alloy the most beautiful shades. Jewelers use these properties in the manufacture of quality jewelry.
Bright tones (up to rich red) ensure the presence of copper in the composition.
An additive made of silver, based on the percentage, can give products a greenish tint (at low dosages) or white if silver accounts for one third of the total weight of the product.
Chrome or cadmium ligatures can give the accessories a spectacular black color. Such products are necessarily covered with an additional layer of rhodium.
The yellow alloy combined with chic platinum results in beautiful white gold. Such products have been at the peak of popularity among people who know a lot about such jewelry for many years.
However, the resulting alloy is quite expensive, so often in the manufacture of such jewelry using more affordable types of ligatures.
- Snow-white tone gold alloy manifests itself in the case when it contains at least 10% palladium.
- If the decoration shows pleasant greenish color, this suggests that zinc additives are present in its content.
- Pale yellow tint achieved when nickel is added to the content. But here it is important to keep in mind that this metal may well serve as the cause of the manifestation of allergenic or magnetic properties. Adverse factors of the effect of ligatures on the human body can be neutralized only by applying a coating to jewelry, which subsequently has to be updated.
To indicate a specific sample, for precious metal jewelry apply a special brand. It not only testifies to a certain grade of a product, but also serves as confirmation of its true origin. In Russia, a relief pattern of a female face in profile is used as a stigma. After it, a digital mark is set.
Soviet-era jewelry depicted a star in the inside of which a sickle and hammer fit. Numerical designations also differ. Instead of 585 samples, 583 were exhibited.
Comparison with other samples
Consider how gold 585 of the sample can differ from other similar alloys.
From 583
The main features of 583 and 585 samples are the same and do not differ. The difference lies solely in their composition - in 0.2% of gold. The main thing that distinguishes the 585 sample is its fixation as an officially established standard. Jewelry with the 583th breakdown is no longer available; actual stamps with such a numerical mark can no longer be found in modern products.
From 375
Jewelry made of gold of the demanded 585 sample significantly differs from low-grade products from 375 alloy. They are different not only in their external qualities, but also in their physical qualities. The material 585 of the sample does not so rapidly lose its original paint and leaves no residue on the skin, which cannot be said about the 375 alloy.
Application
Today, the alloy of the category in question, characterized by excellent quality, is the most common jewelry raw material in Russia. All kinds of jewelry are made from it. He is also often involved in the role of gilding fashion products made of noble silver.
Often, gilding is also found on high-quality jewelry, which was originally not made from precious materials.
If we consider in more detail, the alloy 585 samples can be used in the following areas:
- in the jewelry industry for the manufacture of accessories;
- in the production of electronic systems;
- in the manufacture of church or objects of various cults;
- in chemical industries;
- in the role of capital conservation products.
How to determine the sample of gold?
Finding out what a gold sample is is not difficult. Jewelers can quickly calculate the value of an instance, can give a guarantee. This is an elementary and one of the most reliable solutions.
If you want to approach the determination of a sample more seriously and responsibly, then individuals are admitted to the Russian State Assay Office.
Here they will be able to accurately determine the sample, and then put a confirming stamp.
If you want to identify a sample of gold at home, then several relevant methods will do.
- Check jewelry using vinegar. Immerse the accessory there and immediately see the result. Natural gold of 585 tests will not change its color.
- TYou can also check use magnet Is another popular way. If the jewelry is well and problem-free magnetized to it, this will indicate that it is made of steel or gilding, since a quality alloy 585 can not be magnetized.
- Take a look at the decoration in question. A genuine alloy product will not exude even subtle odors.
- If the house has unbaked ceramic tiles, you can gently rub it on the surface with a gold ornament. If you notice that dark or grayish traces appeared after such manipulations, this will indicate that this is not genuine gold of the specified sample.
- Gold can also be checked. using a powder for cauterizing wounds or lapis. These are simple ways to detect metal. Lightly moisten the jewelry, apply a small amount of lapis on its surface. If the material suddenly turns black, this will indicate that before you is not gold, but a fake.
Despite a large number of different ways, for sure you still can’t determine the sample and origin of gold at home. This is due to the fact that for all tests it is necessary to have specialized materials at hand, namely: perchloric gold, nitric acid and a test needle.
Care Features
Despite the fact that 585 gold does not suffer from serious flaws and looks attractive, this does not mean that jewelry from it does not require proper and regular care. Let us consider in more detail how you can take care of such jewelry in order to maintain their attractive appearance.
- You can prepare a special solution. To do this, mix a tablespoon of any detergent and a teaspoon of ammonium hydroxide. The resulting mixture will need to be mixed with boiling water. It is best to do this in a deep container. Next, gold, which requires cleaning, is added to the prepared composition and left there for some time. After that, it is enough to rinse the gold jewelry under running water, and then wipe it with a dry rag or napkin.
- To clean gold, a special soap solution is often used, in which 40 ml of hydrogen peroxide and a teaspoon of ammonia are present. In the resulting composition put gold jewelry 585 samples. In the solution, it should be soaked for at least 30 minutes. After that, the decoration should be removed, washed and dried.
- You can refresh the appearance of a gold jewelry with ordinary table salt. This is a cheap and effective method. It will take 3 tablespoons of salt to dissolve in half a glass of warm water. After that, the decoration will need to be lowered into the resulting liquid and left there for 12 hours.
- You can lay a foil sheet on the bottom of the pan. On it should be laid out a gold jewelry that needs cleaning. The dishes need to be poured with a solution prepared from 2 tablespoons of soda and 1 cup of water. The composition with the product should be left overnight. In the morning, the decoration will need to be removed from the solution, washed under running water and wiped dry with a cloth or a dry cloth.
- If the usual methods of refining gold turned out to be useless, it makes sense to turn to mechanical influences. If there are no additional inclusions in the form of precious stones on the jewelry, you can do this: squeeze a little toothpaste onto a soft-brushed toothbrush. Then, the contaminated areas of the gold jewelry will need to be cleaned with a brush, wiped with a sponge moistened with an alcohol solution. After all these steps, the gold jewelry should be rinsed under running water and wiped dry.
- If you need to clean a jewelry made of white gold, a solution prepared from ammonia and alcohol is suitable. In the resulting mixture, you will need to immerse the jewelry and leave it for several hours.After this, the thing must be thoroughly rinsed and properly dried.
- If you have a gold jewelry with inserts of precious or semiprecious stones, you need to remember that in case of too rough and careless cleaning, inclusions can come off the base. You can get rid of dirty particles accumulated on pebbles using ordinary cotton swabs previously moistened with alcohol.
- If the jewelry is supplemented with diamonds, then it should never be soaked in the compositions described above, or even in ordinary water. This is due to the fact that the vast majority of precious stones simply stick on a gold base and can fall off.
- Today, gold jewelry with a matte finish is very popular and fashionable. They also need to be properly looked after so that they do not lose their pristine beauty. You can not use any abrasive compounds, too hard towels or toothbrushes for this - these funds can leave a lot of damage on the matte surface.
- For cleaning matte gold jewelry, a sure-fire solution is to immerse them in a 25% ammonia solution. No more than 12 hours should be spent on soaking. After this time period, the jewelry should be thoroughly washed under running water, and then dried.
The following video discusses some of the features of gold 585.