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The carat system is increasingly being complemented or superseded by the millesimal fineness system in which the purity of precious metals is denoted by PARTS PER THOUSAND of pure metal in the alloy.

The most common carats used for gold in bullion, jewelry making and by goldsmiths are:
24 carat (millesimal fineness 999 or higher)
22 carat (millesimal fineness 916)
21 carat (millesimal fineness 875)
20 carat (millesimal fineness 833)
18 carat (millesimal fineness 750)
15 carat (millesimal fineness 625)
14 carat (millesimal fineness 585)
10 carat (millesimal fineness 417)
9 carat (millesimal fineness 375)
8 carat (millesimal fineness 333)
1 carat (millesimal fineness 042)

13 years ago. Rating: 0
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Remember! 24 carat gold is the pure gold.

So, 22 carat gold contains 22/24 × 100 = 91.66 % of gold and remaining % are impurities.

Hope you can find the percentage of other carat gold by yourself.

 

13 years ago. Rating: 0
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