In s925, s is an abbreviation of sterling, meaning "standard purity". 925 silver is an jewelry made of raw silver with a silver content of 92.5%. Due to the strong chemical reaction, pure silver is easy to darken and black, and 925 silver treated by a special process has been improved and is not prone to oxidation.
Sterling silver has a hardness of 2.7, which is relatively soft, because of its high purity, it is very soft and difficult to make complex and diverse jewelry. S925 is known internationally as standard silver, in which the material contains 92.5% silver and 7.5% copper.
s990 solid silver jewelry, its silver content is not less than 990. Jewelry mark: s990.
s925 silver jewelry, the silver content of not less than 925. Jewelry mark: s925.
s800 silver jewelry, its silver content is not less than 800. Jewelry mark: s800.
2, the primary color, polished surface, you can go to the jewelry shop to let the master use cloth wheel polishing, cloth wheel polishing with a silver cloth to wipe it.
3, no polished surface has a gap, with silver wash wash can be cleaned, wash the silver water once not too much, it is best to wipe repeatedly, use too much will reduce the weight of silver.