N-COUNT A gemstone is a jewel or stone used in jewellery. 宝石
Modern gem stones according to the newest stone will be divided into three categories use, they are: chromatic gem, diamond and jade.
现代宝石学最新根据宝石的用途将宝石分为三个类别，它们分别是：彩色宝石、钻石和玉石。
Pins in an array of segments are offset with the central plane of a ring type article to permit a gem stone to be seated deep within the core.
段的排列中的 销偏离戒指等饰品的中心平面从而使钻石能够深深的坐在所述芯内。
Recommended Applications: PCD, metal bonded products, ceramic bonded products, electroplated diamond products; optical glass, fine ceramics and gem stone grinding and polishing.
适用范围： 适用于PCD、金属结合剂、陶瓷结合剂、电镀产品，用于光学玻璃、精细陶瓷、宝石等产品的研磨抛光。
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