Carats to Stones

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Carats

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.

st =
ct *
 
 
 

Stones

The stone is a unit of weight in the imperial system used informally in the UK and Ireland, almost exclusively as a measure of body weight. Although sanctioned by the EU for use as a supplementary unit it is essentially obsolete outside the UK and Ireland.

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Quilates a Piedras :: Carats en Pierres :: Karat in Stone :: Quilates em Pedras :: Carati a Pietre :: Karaats naar Stenen :: Караты в Стоуны :: 克拉 到 石 :: 克拉 到 石 :: カラット から ストーン :: 캐럿에서 스톤스으로 :: Karat till Stones :: Karat til Stones :: Karat til Stones :: Karát do Kámen :: Quirats a Pedres :: Καράτια για Stones :: Karaty do Cetnary długie (UK) :: Karati v Kamen :: karát do kameň :: Karát to Kő :: Карати в Камъни :: Quilates em Pedras :: Karaatit = Kivet :: Карати у Стоун (stone) :: Karatai įAkmenys :: कैरेट से स्टोन्स को