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Silver is divided into pure silver, 925 silver, plain silver, macasite and Tibetan silver.

1, sterling silver

The content of pure silver is close to 100% metallic silver. Silver is chemically inactive, but because of its special affinity with sulfur, silver sulfide can be slowly generated in the air, making it black and impure.

2925 silver

925 silver is pure silver when its silver content is about 92.5% and its purity is about 92.5%. Because high-purity silver is soft and easy to be oxidized, 7.5% other metals are added to 925 silver to make it have ideal hardness. 925 sterling silver is the international standard silver for silver ornaments.

3.pure silver

In the jewelry industry, 925 sterling silver or 990 sterling silver is directly processed into finished silver ornaments, which do not contain platinum, colored gold and other alloys, and 925 sterling silver and S990 sterling silver jewelry without other jewelry and jade are called "plain silver". Pure silver oxidizes easily in the air, which leads to the yellowing of silver ornaments.

4. White iron ore

It is called "Mulcaster" mainly because its craft comes from Thailand. Makasite inlaid gems are different from Tibetan silver and Nepalese silver. White iron ore is dominated by crystal clear lapis lazuli and garnet. Red and black are the main colors of marcasite gems, which can emit beautiful light in the sun.

5. Tibetan silver

Tibetan silver is an elegant name for white copper (copper-nickel alloy). This is a kind of decorative silver which is very popular in Tibet and Nepal. It is generally composed of 30% silver and 70% copper. Because of its low silver content and low value, the so-called Tibetan silver in recent years is mostly white copper-tin alloy.

Baidu encyclopedia-Tibetan silver

Baidu Encyclopedia-Mulcaster

Baidu Encyclopedia-Yin Su

Baidu Encyclopedia -925 Silver

Baidu encyclopedia-sterling silver