据英国《每日邮报》报道，伦敦钻石公司Gem Diamonds在南非小王国莱索托的钻矿，新发现一粒196克拉的白钻原石(见图)。

A 196-carat rough white stone (see photo) was found by Gem Diamonds at the company's mine in Lesotho, a small kingdom in South Africa, the Daily Mail of London reported.

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据公园管理人员介绍，这颗钻石不论从颜色还是大小上看，都好像一粒大咖啡豆。

The park superintendent said the diamond was about the same size and colour as a large coffee bean.

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对工作中遇到的一粒绿色钻石的鉴定特征进行了论述，并阐述了实验室对合成碳化硅的鉴定步骤。

The identification characteristics of a green diamond encountered by the author are discussed in the paper and the identification procedure in lab is expatiated.

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