The composition of sterling silver is a common concern, particularly regarding the presence of specific metals. Sterling silver, by definition, is an alloy primarily composed of silver. It must contain at least 92.5% pure silver. The remaining 7.5% is made up of other metals, often referred to as alloy metals. These are added to increase the hardness and durability of the silver, as pure silver is too soft for most practical uses in jewelry and silverware.
The selection of these alloy metals has significant implications for both the material’s properties and its potential impact on individuals with metal sensitivities. Different metals contribute uniquely to the alloy’s characteristics, affecting factors such as tarnish resistance, malleability, and overall strength. Historically, copper has been the most frequently used alloy metal in sterling silver. Its widespread availability and favorable impact on the alloy’s workability have made it a preferred choice.