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There are five options for the gemstone: blue topaz, opalite, onyx, sapphire and ruby.

有五种宝石供选择，分别是蓝色托帕石、不纯蛋白石、缟玛瑙、蓝宝石和红宝石。

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This cut topaz gemstone shows off its striking blue coloration, but the mineral also occurs in a colorless form or with a yellow or green color.

这颗经过切割的黄晶闪耀着夺目的蓝色光芒，但是这种宝石也有无色的，也有黄色或绿色的。

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Meet the blue sapphire, gemstone of choice for biblical kings and the late Princess Diana, now de rigueur among legions of royal admirers and, more recently, high-end jewelers.

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