Stones to Carats


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A stone is a unit of weight equal to 14 pounds averdupois (or international lbs). By turn, this makes a stone equivalent to 6.35029kg.

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ct =
st * 31751.


Abbreviated "ct." and spelled with a "c" is a measure of weight used for gemstones. One carat is equal to 1/5 of a gram (200 milligrams). Stones are measured to the nearest hundredth of a carat. A hundreth of a carat is also called a point. Thus a .10 carat stone can be called either 10 points, or 1/10 of a carat. Small stones like .05, and .10ct are most often referred to by point designations. Note that karat with a "K" is a measure of the purity of a gold alloy. A one carat round diamond of average proportions is approximately 6.5mm in diameter. Note that this relationship of weight and size is different for each family of stones. For example ruby and sapphire are both heavier than diamond (technically, they have a higher specific gravity, so a 1 carat ruby or sapphire is smaller in size than a on carat diamond. See Weights and Measures of Gold, Silver and Precious Gems for more information.

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Piedras a Quilates :: Pierres en Carats :: Stone in Karat :: Pedras em Quilates :: Pietre a Carati :: Stenen naar Karaats :: Стоуны в Караты :: 石 到 克拉 :: 石 到 克拉 :: ストーン から カラット :: 스톤스에서 캐럿으로 :: Stones till Karat :: Stones til Karat :: Stones til Karat :: Kámen do Karát :: Pedres a Quirats :: Stones για Καράτια :: Cetnary długie (UK) do Karaty :: Kamen v Karati :: kameň do karát :: Kő to Karát :: Камъни в Карати :: Pedras em Quilates :: Kivet = Karaatit :: Стоун (stone) у Карати :: Akmenys įKaratai :: स्टोन्स से कैरेट को :: Stones (kamenovi) u Karati :: Стоўны ў караты :: Ston në Karatë :: Стоуни в Карати :: Pietre în Quilate