Definitions for "Precious metal"
metals of value. Typically gold, silver, platinum. However, can include palladium and rhodium.
The three primary precious metals are gold, silver, and platinum. All others (except derivatives of these three) are known technically as base metals. Of course, the preciousness of precious metals varies, as does the baseness of base metals.
Any of several relatively scarce and valuable metals, such as gold, silver, and the platinum group metals.