The marking “S925” or simply “925” found on jewelry, particularly rings, indicates that the item is composed of sterling silver. This number signifies that the metal is 92.5% pure silver, with the remaining 7.5% typically consisting of other metals, often copper. An example would be a ring stamped with “S925” inside the band, assuring the buyer of its silver content.
This standard is important because pure silver is too soft for most jewelry applications. The addition of other metals enhances the alloy’s durability and strength, making it suitable for everyday wear. Historically, the use of this standard provides a degree of consumer confidence, assuring them of a certain level of precious metal content in their purchase and preventing fraudulent misrepresentation of the jewelry’s composition.