An 'international carat' of 205 milligrams was proposed in 1871 by the Syndical Chamber of Jewellers, etc., in Paris, and accepted in 1877 by the Syndical Chamber of Diamond Merchants in Paris.

Precious stones are weighed in carats; a single carat is equal to 200 milligrams. Carat is also a variant spelling of karat, which measures the purity (but not the weight) of gold.

A carat is a unit of weight used to measure gemstones and pearls. One carat equals 200 milligrams or 0.2 grams. The heavier the stone, the higher its carat weight. Important note: Carat weight is not the …

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Carat denotes the weight of a diamond, not the size. A diamond may have a higher carat weight without appearing larger; and two diamonds of the same carat weight can vary in size if one is cut deeper …

carat, unit of weight for diamonds and certain other precious gems. Before 1913 the weight of a carat varied in different gem centres.

Sep 8, 2025 · Carat is one of the 4Cs (Carat, Cut, Color, Clarity) used to determine diamond quality. Carat alone doesn’t dictate beauty, balance across all four Cs matters most.

Aug 19, 2024 · A carat is the unit used when measuring the weight of a gemstone, such as diamonds, rubies, sapphires and emeralds. Specifically, the weight of a carat is equal to 200 milligrams, or 0.2 …

Oct 1, 2025 · Carat weight is one of the most recognized aspects of a diamond’s value, yet it’s also one of the most misunderstood. Many assume bigger always means better, but in reality, carat is just one …

Here you can find the carat size and weight of all of our classic shapes. Still don’t know how to tell the difference between diamond sizes? For further questions regarding our diamond carat size chart, our …