In the mineral table of hardness, it has a rating of 8, which means that a knife cannot cut it, and that topaz will scratch quartz.

在矿石硬度表上，它的硬度为8，这表明刀子不能割开它而它可在石英上划痕。

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Blue topaz is often sold as aquamarine and a variety of brown quartz is widely sold as topaz.

蓝色的黄水晶常被作为海蓝宝石出售，许多种棕色石英被当做黄水晶广为贩卖。

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A pale yellow variety of crystalline quartz resembling topaz.

一种类似黄玉的晶体石英的淡黄色变体。

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