rough diamond ; raw diamond
超过85%钻石原石(Rough diamond )在这里交易。超过50%已切割好的钻石和40%的工业钻石在这里交易。
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钻石原石分类 diamond
钻石原石分级 rough diamond grading
钻石原石市场 rough diamond market
世界上最大的钻石原石即将以一种极不寻常的方式出售。
The world's largest uncut diamond is about to be sold in a most uncommon way.
youdao
钻石原石价格下跌更严重。比起去年7月在一些拍卖会上拍出的最高价，原始价格下降多达75%。
Rough diamond prices have fallen even more, as much as 75 percent since their peak last July at some auctions.
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