925 silver is the international standard silver for making silver ornaments. It is different from 9.999 silver, because 9.999 silver has a high purity and is very soft, so it is difficult to make complicated and diverse ornaments, while 925 silver can. In fact, the silver content of 925 silver jewelry is not 100%, because 7.5% alloy is added to pure silver, which improves the luster, brightness and hardness of silver.
Since Tiffany introduced the first set of silver ornaments with a silver content of 925% in 185 1, 925 silver has become popular, so all the silver ornaments on the market now use 925 as the standard to identify whether they are pure silver.
The measured purity "999" represents thousands of feet silver. 999 silver is pale and soft, and the jewelry made of it is easy to deform and cannot be inlaid with gems.
"99" stands for foot silver, with a silver content of 99%, and the jewelry is marked as S990.
"925" silver contains 92.5% silver and 7.5% copper, and the jewelry is marked as 925. Most of our common silver ornaments are made of 925 silver. After polishing, 925 silver jewelry presents a very beautiful metallic luster, but also has a certain hardness, which can be inlaid with gems and made into high-grade jewelry.