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Fine Jewelry University Articles matching: “alternative metals”
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Fine Jewelry University
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How to Sell Your Jewelry
… the alloys. 14 karat is 14/24 or .583 gold and 18 karat is 18/24 or .750 gold. Platinum most of the time is 90% pure and 10% alloy. Silver jewelry is usually sterling, which is .925 pure. The three units of weight used with precious metals are troy ounces, pennyweights, and grams. The troy ounce is equal to 20 pennyweights (DWT) or 31.15 grams (learn more about measure precious metal weights ). So here is an example; say the spot price of gold is $300 and a 14K ring …