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。
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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