What Is .925 FAS Silver?


Quick Answer

Silver stamped ".925 FAS" is made of 92.5 percent silver, and the remaining 7.5 percent can include a combination of other alloy metals. These other metals may include copper, nickel or zinc.

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What Is .925 FAS Silver?
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Full Answer

Silver is not required to be marked in the U.S. This type of FAS silver is also called sterling silver.

A drop of nitric acid can test a piece of jewelry to determine whether it is sterling silver. The nitric acid turns a creamy color if it is authentic sterling silver, and it turns green if the jewelry is nickel silver, silver-plated brass or a low-quality silver alloy.

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