Petra Asia Ltd
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Lab Created Bixbite
品牌名称:
Petra
宝石颜色:
Magenta
描述
联络供应商
描述
- Synthetic Beryllium Alum silicate Chemical composition: Be3, Al2, Si6, O18
- Minor chemical elements (wt./%): MnO 0.15-0.26, FeO 1.52-1.89
- Crystal system: hexagonal
- Space group: P6/mcc
- Density (g/cm3): 2.72-2.73
- Cleavage: absent
- Mohs hardness: 8
- Fracture: uneven to conchoidal
- Brittleness: brittle Index of refraction: No- 1.570, Ne- 1.565
- Optical character: uniaxial, negative
- Birefringence: 0.005
- Growth method: hydrothermal process
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