carat


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carat

1. a measure of the weight of precious stones, esp diamonds. It was formerly defined as 3.17 grains, but the international carat is now standardized as 0.20 grams
2. a measure of the proportion of gold in an alloy, expressed as the number of parts of gold in 24 parts of the alloy

Carat

 

a unit of weight, abbreviated kar. in Russian and ct internationally, which is used in the jewelry trade for measuring the weight of precious stones and pearls. The carat is used in a number of countries to indicate the purity of precious metal alloys. The metric carat, which was established by the fourth General Conference on Weights and Measures (Paris, 1907) and adopted in the USSR in 1922, is equivalent to 200 mg (exactly) or 2 X 104 kg.

carat

[′kar·ət]
(lapidary)
A unit of weight of gemstones, equal to 200 milligrams. Also known as metric carat.
References in periodicals archive ?
The first collection of wholesale-priced one carat diamonds as well as diamond set rings, pendants and earrings will go on sale at Phillip Stoner the Jeweller in Halifax at 9am on Saturday 10th April 2010.
We sorted the diamonds by shape since buyers apparently are lexicographic--first picking their preferred shape and then comparing diamonds according to cut, clarity, color, and carat size.
The Catoca mine produced 620,500 carats of diamond, while the production rates of Camatue, Cuango, Chitotolo, Calonda, Somiluana, Luo and Lulo respectively stood at 41,200, 39,700, 20,000, 12,800, 9,000, 8,700 and 808 carats.
According to Trans Hex, the company sold each rough diamonds at record average price of $1,782 per carat.