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。
Natural quartz crystal from DONGHAI, JIANG SU mostly include amethyst, smoky quartz and yellow quartz.
东海天然有色水晶主要有紫晶、烟晶、黄水晶。
The quartz is much less brilliant and more plentiful than true topaz. Most of it is a variety of amethyst that heat has turned brown.
石英没有纯的黄宝石明亮夺目，但是产量比较丰富。大多数是由各种各样的紫水晶加热转变成褐色的。
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