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Sterling silver is an alloy

Sterling silver is an alloy that contains a minimum of 92.5% silver. It is usually alloyed with copper, which strengthens the silver while allowing it to be ductile. Other, newer alloys with white metals are also used to help reduce "firescale" (unattractive staining that occurs when heating silver and copper alloys) and the patina which can develop over time on copper. Sterling silver usually bears a "925" stamp, which indicates that it contains 92.5% pure silver. SCR888 download

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