To locate the proportions that influence the face-up appearance of a round brilliant diamond and to learn more about how GIA measures them, click on the proportions listed below.

• 本文是GIA美国珠宝学院对于钻石的一个三维解剖,它将告诉你钻石的真正面目。查找比重和影响面行动的出现,一轮灿烂的钻石,并更多地了解如何营措施,然后按这个比例分列如下。