classification of diamond
... clasp 扣环 classification of diamond 钻石分绿，钻石分类 clatersal 钻石屑，钻石粉，金刚砂 ...
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classification of diamond
钻石的分类
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Diamond cutting is a very important factor in its classification standard of 4c for the brilliance, fire, gleaming are the main reason of diamond's brilliance.
在钻石分级的“4c”标准中，切工是非常重要的因素。因为亮度、火彩和闪烁是钻石展现美丽的根本原因。
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