首页 > Term: amethyst point
amethyst point
Amethyst crystal, from a geode, commonly possessing only the six (or possibly three) rhombohedral terminal faces; generally with gradational color, the best at the apex commonly grading to colorless at its base.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)