also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree, [..]

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Weight measurement used in measuring the size of a gemstone. A carat is 0.2 grams, or 200 milligrams. (The carat weight system is used worldwide, even in the United States where the metric system isn& [..]

unit of weight, used for gems, about 200 milligrams.

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(n) a unit of weight for precious stones = 200 mg(n) the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold

Degree of purity of gold: pure gold is 24 carat, 18 carat is an alloy of which 18/24 is gold, 14 carat is an alloy of which 14/24 is gold and 9 carat is an alloy of which 9/24 is gold.

The standard measure of weight used for gemstones, introduced in 1907. One carat (ct.) is equivalent to 0.2 grams. A carat is divided into 100 points

A unit of gold fineness (and gemstone weight). 24K is pure gold, whereas 18K gold is 75% pure.

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term used in gemology to describe the weight of a semi–precious or precious stone (1 carat = 2.4 g). Derived from the ancient practice of using carob seeds as comparative weights for gems.

a unit of weight for gems. A carat is one fifth of a gram (0.2g). (GS)

Weight measurement used in reference to gemstones in regard to their evaluation. A carat is .2 grams (or 200 milligrams), and this weight is used worldwide, even in the U.S. where the metric system is [..]

Carat is a metric unit of weight used for precious gemstones. One carat is equal to .20 grams, or conversely, 5 metric carats equal one gram. Carats are further divided into 100 points. Since carat is a metric unit, the abbreviation “ct” does not require a period.

The basic weight unit for gems; one carat equals one-fifth of a gram.

A unit of weight for diamonds, pearls and other gemstones. 1 carat = 200mg. or;

A unit of weight for gemstones. There are five metric carats to the gram.

  A unit of measurment based on weight or mass used for diamonds gemstones and pearls. 1 carat = 0.2 grams. Also known as the metric carat. Spelled with a "c" and abbreviated as "ct". A heavier diamond is almost always worth more than a smaller diamond with the same clarity and cut. Carat-weight plays a large ro [..]

A unit of weight for precious stones and pearls, equivalent to 200 milligrams. Formerly, any of several units of weight, varying from 189 to 212 mg, the weight of a carob seed. A measure of the [..]