simulated diamond ; imitation diamond ; diamond simulant
钻石仿制品 diamond substitute ; diamond simulant
钻石的切割仿石在很大程度上决定了钻石最后的表观，所以切割对四个C来说是最没有发挥空间的一个。
The way a stone is cut largely determines its final appearance, and so has the least wiggle room of any of the four Cs.
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