When buying a silver ring, you may sometimes hear about 925 sterling silver rings, sterling silver rings, etc. Many friends do not know what 925 silver rings mean. In fact, 925 sterling silver means the silver content of silver rings. 925 sterling silver generally refers to silver products with a silver content of no less than 92.5%. The purity above that is considered sterling silver. The 925 sterling silver ring is added with 7.5% other metals to make it have ideal hardness, better shaping, and inlaying of various gemstones, and better hardness.