How pure must sterling silver be?

Sterling silver is defined as an alloy that contains at least 92.5% pure silver, meaning that the remaining 7.5% is typically comprised of other metals, most commonly copper. This specific purity standard is essential for achieving the desired balance of quality and durability; pure silver, while highly malleable and ductile, is too soft for practical use in most jewelry and silverware. The addition of other metals enhances the strength and resilience of sterling silver products without significantly compromising the appearance or quality of the silver.

This designation not only provides a guideline for manufacturers and consumers but also allows for the creation of a versatile material suitable for crafting a wide range of items, from jewelry to utensils. Therefore, understanding that sterling silver must contain at least 92.5% pure silver is crucial for identifying and valuing silver products accurately.