从消费者角度看钻石的4C分级和新的国家标准
4C Grading and New National Standard of Diamond as Viewed from Consumer
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摘要: 钻石是唯一可以用4C标准估价的宝石。从消费者角度,对钻石4C的追求有主次之分,依次为质量、颜色、切工、净度。新的钻石分级国家标准较原国家标准更趋完善,但仍有一些有待补充之处。Abstract: Diamond is only one gemstone that can be valued by 4C standards. However, as viewed from consumer, they should differentiate what is primary from what is secondary when they seek 4C of diamond. The sequence from the primary to secondary is carat, colour, cut and clarity. New national standard is more perfect than the old, but there are some defects to be improved.