天然钻石属于非再生资源，可分为一型钻石与二型钻石。
天然钻石让整个人类都为之着迷。
Natural diamonds have fascinated mankind throughout the centuries.
希望之钻价值两亿五千万美元，是世界上最大也最完美的天然钻石。
Valued at 250 million dollars, the Hope diamond is the world's largest and most perfect natural diamond.
天然钻石常因含各种呈色离子及包裹体等而大大影响了其商业价值。
The commercial value of natural diamond is often influenced by some coloring ions and inclusions in diamond.
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