天然钻石让整个人类都为之着迷。
Natural diamonds have fascinated mankind throughout the centuries.
天然气、铜和钻石同样不利于一个国家的健康。
Natural gas, copper and diamonds are also bad for a country's health.
天然灰色钻石发生在一个特定的地区色彩基调。
Natural gray diamonds occur within a specific region of colour tone.
特别为了辨别天然莫桑石而发明，建议在测试真钻石后用。
It is recommended to be used after positive testing result for diamond.
特别为了辨别天然莫桑石而发明，建议在测试真钻石后用。
It is recommended to be used after positive testing result for diamond.
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