PURE GOLD IS SO SOFT IT IS RARELY USED IN JEWELRY. As a result, jewelers create with various gold alloys, collectively called "karat gold." Karat (K) defines the number of parts, by weight, of gold in 24 parts of alloy. The higher the percentage of pure gold,the higher the karat. Pure gold is 24K; 18K is 18 parts fine gold and 6 parts metal ...
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