The Carat卡塔
Diamonds and other precious gems are sometimes measured in carats, a term derived from the Greek word for a carob seed. Carob seeds were once used as measures of weight. One carat is equal to 0.007 ounces or about 200 milligrams. The Cullinan diamond, found in South Africa in 1905, weighted 3,106 carats. 钻石和其他珍贵宝石有时以克拉为单位进行测量，这一术语源自希腊语中的“车前子”一词。车前子曾被用作重量的衡量单位。一克拉等于0.007盎司或约200毫克。1905年在南非发现的库利南钻石重3,106克拉。
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