The composition of sterling silver is primarily silver, but it also incorporates other metals to enhance its durability. The standard alloy is 92.5% silver, with the remaining 7.5% consisting of other metals. While copper is the most common metal used in this alloy, other metals can occasionally be included.
The inclusion of metals in sterling silver’s alloy is crucial for its functionality. Pure silver is too soft for most practical uses, particularly in jewelry and silverware, where strength and resistance to wear are essential. The added metal, most often copper, hardens the silver, making it more suitable for everyday use. The choice of metal influences the alloy’s properties, including its hardness, tarnish resistance, and color.