{"id":11443,"date":"2021-05-28T13:36:06","date_gmt":"2021-05-28T10:36:06","guid":{"rendered":"https:\/\/drago-met.ru\/?p=11443"},"modified":"2024-03-22T17:23:28","modified_gmt":"2024-03-22T14:23:28","slug":"900-proby-zolota-i-serebra-sostav-svojstva-splava-ottenki-i-sfery-primeneniya-pravila-vybora-i-uhoda-za-myagkim-metallom","status":"publish","type":"post","link":"https:\/\/drago-met.ru\/en\/zoloto\/proby-zolota\/900-proby-zolota-i-serebra-sostav-svojstva-splava-ottenki-i-sfery-primeneniya-pravila-vybora-i-uhoda-za-myagkim-metal\/","title":{"rendered":"900 tests of gold and silver: composition, properties of the alloy, shades and uses, rules of choice and care of the soft metal"},"content":{"rendered":"

Pure Gold<\/a> - The more natural metal it contains, the more expensive the jewelry will be. So 900 proof is one of the most expensive, but officially unrecorded precious alloys<\/a>. It consists on 90% of pure precious metal and has its own features.<\/p>\n\n\n\n

900 proof - what kind of metal it is, what it looks like, marking peculiarity, number of carats<\/h2>\n\n\n\n

900 proof is considered a rarity in the former CIS countries. It is not to be found in jewelry stores online, either. This exotic brand is sometimes used by jewelers to make jewelry to order. It can match both silver and gold. <\/p>\n\n\n\n

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According to the metric system, the proportion of gold of 900th standard is 90%, and only 10% are accounted for by the impurities. The components of the ligature are mostly copper and silver in different proportions, which improve the consumer properties of the alloy without depriving it of its natural inertness and high density.<\/p>\n<\/blockquote>\n\n\n\n

As a rule, the alloy is not stamped if the item is handmade, made to order. But in situations where there is a need to confirm the quality, such jewelry will be stamped at the Assay Office with 750 breakdown<\/a>appropriate 18 carats<\/a>. <\/p>\n\n\n\n

\"Alloy<\/span>
Gold of 900 proof<\/span><\/strong><\/figcaption><\/figure>\n\n\n\n

Rare 900 silver and gold: composition, properties of the alloy and the table of shades<\/h2>\n\n\n\n

900 silver standard<\/a>The alloys, like gold, are almost never used for jewelry purposes. These alloys themselves are quite malleable, are considered rare, and are used only for custom handwork.<\/p>\n\n\n\n

The density of the 900 gold standard is 19.32 g\/cm3<\/sup>. High grade metal<\/a> with a minimal amount of impurities is quickly scratched, chipped, deformed, and loses its external luster and attractive appearance.The composition may have weak shades of<\/a>The colors will vary depending on the proportion of each component in the ligature. There are the following color variations:<\/p>\n\n\n\n

Metal color<\/th>Proportion of components, g.<\/th>Proportion of components, g.<\/strong><\/th>Proportion of components, g.<\/strong><\/th><\/tr><\/thead>
 <\/td>Gold<\/td>Silver<\/td>Copper<\/td><\/tr>
Red<\/td>900<\/td>10<\/td>90<\/td><\/tr>
Yellow<\/td>900<\/td>40<\/td>60<\/td><\/tr>
White<\/td>900<\/td>90<\/td>10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Use of the 900 standard in precious metals<\/h2>\n\n\n\n

Despite its natural softness, 900-proof gold is used to produce collectible coins and jewelry in some Asian and European countries. However, the hue of such items can vary because different ratios are used ligatures<\/a>. <\/p>\n\n\n\n

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Jewelry items are characterized by massive size and heavy weight, due to the increased softness of the alloy.  <\/p>\n<\/blockquote>\n\n\n\n

Dentistry<\/h3>\n\n\n\n

Until 1956, dentists used alloy 916. After that, it was decided to use the 900 grade, which was considered of higher quality. This composition was characterized by greater strength and lower cost of dentures. The metal is used for crown manufacturing<\/a> thanks to its hypoallergenic qualities.<\/p>\n\n\n\n

\"Using<\/span>
Gold tooth 900 <\/span><\/strong><\/figcaption><\/figure>\n\n\n\n

Jewels in Europe, China and the Far East<\/h3>\n\n\n\n

900 is partially equivalent to foreign quality standards, as it refers to 21.6 karatam<\/a>. This gold is sometimes used to make jewelry in Germany, China, India, Egypt, Thailand and the UAE. <\/p>\n\n\n\n

Production of commemorative coins<\/h3>\n\n\n\n

In the times of ancient Russia, the high-grade gold<\/a> was actively used to produce coins. Under Tsar Peter I, alloys from 781 to 980 could be used to make coins. Only under tsarina Elisabeth did they begin to produce the means of payment from precious metals mixed with 14% ligatures.<\/p>\n\n\n\n

Russian gold coins<\/h4>\n\n\n\n

During the reign of Tsar Alexander III, 900 gold was the only metal for the production of tsarist coins. Their distinctive feature was considered a bright reddish tone, which was given by copper in large quantities. Due to the unusual hue they were nicknamed chervontsy.<\/p>\n\n\n\n

Where and how you can buy 900-proof gold<\/h2>\n\n\n\n

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You can also find the 900 sample at a pawnshop or other institutions that accept precious scrap and jewelry. Here this precious stamp<\/a> The price of imported items is much lower than that of custom-made jewelers.<\/p>\n\n\n\n

\"Pawnshop<\/span>
Pawnshop Gold Jewelry<\/span><\/strong><\/figcaption><\/figure>\n\n\n\n

The cost of 1 gram of 900 proof. Pricing factors from exchange to buyout<\/h2>\n\n\n\n

The basis of value precious metal<\/a> with any composition is the price per gram set by the Central Bank of Russia. Next, the cost of gold jewelry is affected by the cost of the alloy used, the jeweler's work, the complexity of order performance, transportation and other costs, and the seller's markup.<\/p>\n\n\n\n

Price of 1 gram of 999 metal in the Central Bank of Russia<\/strong><\/td>4360 rubles.<\/td><\/tr>
Market value of 1 gram of 900 proof<\/strong><\/td>3904 rubles.<\/td><\/tr>
Scrap price 900<\/strong><\/td>3,513 rubles.<\/td><\/tr>
900kt gold price per gram of jewelry in retail stores<\/strong><\/td>8100 rubles.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Pros and cons of the 900 gold<\/h2>\n\n\n\n

900 grade, has certain advantages and disadvantages due to the natural properties of the metal.<\/p>\n\n\n

Pros:<\/div>
does not oxidize, does not change color in contact with the skin;<\/div>
hypoallergenic alloy, not capable of provoking allergic reactions of the body;<\/div>
the natural shade of the products;<\/div>
suitable for investment due to its high pure gold content;<\/div>
products can have different shades.<\/div><\/div>
Cons:<\/div>
an officially non-existent jewelry brand for which no certificate of quality is issued;<\/div>
is only used by jewelers to make custom items;<\/div>
Over time, it loses its shine, and the protective layer wears off;<\/div>
easily deformed, scratched, and chipped;<\/div>
high cost of metal;<\/div>
not suitable for daily use.<\/div><\/div><\/div><\/div>\n\n\n

How not to run into a fake, especially when buying online. Recommendations for choosing jewelry of 900 tests abroad<\/h2>\n\n\n\n

Any jeweler, just like a jewelry store, is ready to take back his product if a customer finds a manufacturing defect. But a customer cannot return a piece of jewelry that he or she stopped liking after buying it. This means that it is necessary to take the choice of jewelry seriously enough. When buying jewelry online, it is important to study the description carefully. <\/p>\n\n\n\n

\"Alloy<\/span>
Gold coin rings<\/span><\/strong><\/figcaption><\/figure>\n\n\n\n

There are a few recommendations for the right choice:<\/p>\n\n\n\n