...等。以上为有结晶的石英之分类，它们都是结晶性的石英，虽然有的很明显，但有些并不是那么容易见到好的结晶。 玉髓(Chalcedony)是水晶无方向性的同质体，其生成为水溶液的微晶沉淀，或蛋白石于低温环境下之去水产物。
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green chalcedony 绿玉髓
Blue Chalcedony 天蓝玛瑙
chalcedony onyx 缟玛瑙
chalcedony moonstone 玉髓月光石
Red Chalcedony 粉玉髓 ; 红玉髓
oriental chalcedony 东方玉髓
Agate and Chalcedony 石英质玉石
N a microcrystalline often greyish form of quartz with crystals arranged in parallel fibres: a gemstone. Formula: SiO2 玉髓
Remove Doubts by Madam Yan Haemachates Mean the Red Chalcedony too?
阎女士释疑——血玉髓就是红玉髓吗？
Budaoweng has two kinds, one is hydrogrossular, the other is chalcedony-opal.
不倒翁有两种，一种为水钙铝榴石玉，另一种为玉髓蛋白石玉。
Barovier went on to develop lattimo, or milk glass, which imitated the pure opaque whiteness of porcelain, and calcedonio, which reproduced the effects of chalcedony, agate and malachite.
这种类似白色瓷器的不透明玻璃，展现出了玉髓、玛瑙和孔雀石般的效果。
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