In fact, 925 pure silver means the silver productions which’s purity of silver are 92.5%. 925 here represents the purity of silver.This is required lowest purity of silver produtions while the purity of 999 gold.For foot silver is too soft and it’s easy to be oxidized,since Tiffany company created 925 silver,it’s thought to be the lowest standard of pure silver.

Silver is a kind of active metal,and it’s easy to make chemical reaction with the sulfur in the air so that the silver productions will become black.As you can see,we should let the silver accessories touch with air less when wearing,and should not wear it in a place with strong chemical gas.after touching sulfur soaps,you must dry it at one.Also the chloride in the sweat of body also influences the silver.

Because of the features of silver itself,the silver of 100% is very very soft and easy to be scratched,also it doesn’t satisfy the requirements of the finer and finer technology and of the richer modellings in modern trendy accessories.In addition, the silver of 100% can change or lose it luster easily,so in 1851, after Tiffany released the first silver production with the purity of 92.5%, this kind of silver soon became the main power in the silver accessories,and also fitted the international silver purity standard.

For containing the alloy of 7.5%,the silver contains ideal hardness,shineness,luster and the ability of anti-oxidization. Also,we could inlay various precious stones on to the silver production,since then,the silver accessories hit the world because of the fashion of fresh luster,brand-new and great modelling, moderate prices.