1, 925 silver indicates that the purity of silver is 92.5%, and 999 silver indicates that the purity of silver is 99.9%.

2.925 silver has ideal hardness, brightness, luster and oxidation resistance due to the addition of 7.5% alloy. But also can be inlaid with various gems. Since then, silver jewelry has quickly swept the world with its bright color, unique style, exquisite workmanship and moderate price.

3, 999 silver is also called foot silver, that is, the silver content is not less than 990. Because it is too soft, it is not easy to cast into the desired jewelry shape, and it is easy to wear and oxidize and blacken, and the processing cost is too high, so it is not suitable for jewelry. Mainly used in industry, but some silver ornaments are made of 999 silver.

4.925 sterling silver is the international standard silver for silver ornaments. Printed silver ornaments are generally stamped with the English abbreviation of silver ("S" or "Sterling"). The mark of standard silver is S925. The difference between 925 silver and 999 silver is S990. But there are also many countries that don't print paper money on silver ornaments.

The price difference between 5.925 silver and 999 silver is not big, mainly because silver itself is not very expensive. Their main difference is that different structures lead to different uses.

Extended data:

925 pure silver is 925/ 1000 pure silver. As pure as 999 gold. Because Ginta's feet are soft and easy to oxidize, Tiffany Company has created a formula of 925 sterling silver.

Silver is an active metal, which easily reacts with sulfur in the air, making silverware black. Therefore, contact with air as little as possible when wearing, and it is not suitable for wearing in places with strong chemical gases. After contact with sulfur soap, it must be dried immediately. Chlorides in sweat can also affect silver.

The difference between 990 sterling silver and 925 sterling silver

1. sterling silver: there is a sign of "S925" or "Ag925" (the former is a little more), which means that the metal contains 92.5% silver. This is the most common symbol, the most common jewelry silver on the market, and also the commonly used symbol for selling silver.

2. Zuyin: There is a sign of "Zuyin 999 or Zuyin 9999", indicating that the silver content of this metal is 99.9% (quite pure! )。 This sign is mostly used in silver ingots, silver ingots, silver ornaments and other large pieces of silver ornaments.

3. Silver-plated: The steel seal "SL" or "FS" indicates that this jewelry is silver-plated.

The foot silver in 999 silver ornaments can be called pure silver. The content is the number behind the metal symbol, and 999 is 99.9% (No.3 silver). With luck, the content can reach 99.95%, which is the No.2 silver.

Foot silver —— "Silver" or "S" with a purity of thousandths, such as "Silver 800" or "S800", "S 990" or "Foot Silver". The price of silver also varies according to the degree of silver and its alloys.

References:

Baidu encyclopedia -925 sterling silver

References:

Baidu Encyclopedia -999 Silver