Natural diamonds have fascinated mankind throughout the centuries.

天然钻石让整个人类都为之着迷。

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The GIA Laboratory issues the Diamond Dossier for loose, natural diamonds between 0.15 and 1.99 carats, in the D-Z color range.

GIA实验室为那些在D-Z的颜色范围中并且在0.15ct-1.99ct发行的钻石小证书是为那些零碎的自然生成的钻石颁发的。

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It's not completely clear how natural diamonds are formed, and although it is known they are made from carbon, scientists are not sure how carbon gets to the extreme depths at which diamonds are made.

天然的钻石是怎样形成的至今仍不是完全清楚，虽然我们知道钻石是由碳组成，但是科学家仍不能肯定碳是怎样到达钻石形成的这一极端深度的。

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So in many ways, for those who invest in natural diamonds, this news is basically irrelevant.

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Synthetic diamonds, made by compressing diamond shards under high temperature and pressure, are less brittle and wear more evenly than natural diamonds.

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Natural pink diamonds are among the rarest in the world.

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