The transparent colourless variety of quartz is still known as rock crystal .

透明无色的水晶仍然是被称为：白水晶。

youdao

The thermoluminescent(TL) characteristics of the natural colourless rock crystal, tea-quartz, amethyst samples and their synthetic samples are tested by using the thermoluminescence metering device.

利用组装的热释光光谱测量装置测试了天然与合成无色水晶、茶晶和紫晶样品的热释光，分析对比了其热释光图谱。

youdao

Crystal sometimes contain calcite, quartz, pyroxene, green shade stone pillars, and operators, such as flashing rock mineral.

晶体中有时含方解石、石英、透辉石、绿帘石、方柱石、符山石和角闪石等矿物。

youdao

The smaller eggs offer a choice of materials, techniques and styles such as carved stones and minerals, as varied as rock crystal, chrysoprase, snowflake obsidian, lavender jade, jadeite, pink opal, rutilated quartz, jasper and turquoise.

FORBES: The Miniature Faberg�� Eggs