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Carat

Metal

Carat

A term used to express the degree of purity or fineness of gold. Pure gold is 24 carat or 1000 fine. The fineness of alloyed gold can be expressed in the number of parts of gold by weight that are contained in 24 parts of the alloy. For example, 18 carat gold contains 18/24 parts of gold and is 75% gold or 750 fine.