Petra Asia Ltd
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Blue Topaz
品牌名称:
Petra
颜色:
Sky, Swiss, London
主石:
Topaz
描述
联络供应商
描述
- Chemical Classification: silicate
- Luster: vitreous
- Diaphaneity: translucent to transparent
- Cleavage: perfect basal cleavage
- Mohs Hardness: 8
- Specific Gravity: 3.4-3.6
- Chemical Composition: Al2SiO4 (F,OH)2
- Crystal System: orthorhombic
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