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<p>[QUOTE=&quot;Hobo, post: 651471, member: 11521&quot;]There are carats (used to specify the weight of a diamond or other precious stone).</p><p>&nbsp;</p><p>And then there are karats (used to specify the purity of a precious metal). A karat is a way to express the fineness of an alloy ralative to a pure sample of the precious metal. A pure sample of the precious metal is 24 karats. An alloy that is 75% gold (or other precious metal) is 18 karat. (Notice that 18/24 = 75%.)[/QUOTE]</p><p><br /></p>

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