Sterling silver, an alloy composed primarily of silver and copper, is susceptible to discoloration under certain conditions. This phenomenon, often perceived as a greenish hue, arises from a chemical reaction between the metal and elements in its environment.
Understanding this process is crucial for proper care and maintenance of silver items. Historically, the addition of copper to silver has been vital to enhance durability, but it also introduces vulnerability to oxidation. The oxidation process is expedited by exposure to moisture, sulfur compounds, and certain chemicals.