correct abbreviation for "karats" in diamonds?

kt or ct?

Mizz P2008-05-07T14:04:49Z

Favorite Answer

diamonds are carats
gold is karats
so.....Ct.

?2016-12-30T17:44:34Z

Karat Abbreviation

jellerson2016-11-09T13:50:01Z

Abbreviation For Karat

Anonymous2015-08-06T14:29:01Z

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RE:
correct abbreviation for "karats" in diamonds?
kt or ct?

aladymo2008-05-07T14:07:36Z

A carat is a unit of weight for diamonds and other gemstones. One carat equals 200 milligrams (0.200 grams). There are 453 grams in a pound (1,000 grams to a kilogram). Therefore, if your fiancee weighs 170 pounds, you have a 385,050-carat fiancee!

A karat, when used with gold, is a unit of purity-- 24-karat gold is pure gold, but usually you mix gold with a metal like copper or silver to make jewelry (because pure gold is too soft). Each karat indicates 1/24th of the whole. So if a piece of jewelry is made of metal that is 18 parts gold and 6 parts copper, that is 18-karat gold.

Where did such a funny unit of purity come from? It turns out that a German gold coin called a mark was common about a thousand years ago. It weighed 24 carats (4.8 grams). The purity of the gold in the coin was expressed in the number of carats of gold present in this 24-carat coin.

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