The marking “S925” found on jewelry indicates that the item is composed of 92.5% pure silver. The “S” typically stands for silver. This hallmark guarantees a specific level of silver purity, with the remaining 7.5% usually consisting of other metals, like copper, added to increase the alloy’s durability and workability. For instance, a ring stamped with “S925” is understood to contain this designated proportion of silver.
This standard of silver purity, often referred to as sterling silver, offers a balance between value and practicality. The addition of other metals enhances the silver’s strength, making it suitable for everyday wear. Historically, the use of sterling silver has provided a reliable and aesthetically pleasing material for crafting jewelry and other decorative items, offering an alternative to pure silver, which is often too soft for practical use.