Technical characteristics
- BrandAmethyst
Description
Category : Mineral variety
Chemical formula : Silica (silicon dioxide, SiO2)
Color : Purple, violet
Refractive index : nω = 1.543-1.553 nε = 1.552-1.554
Cleavage : None
Hardness : 7-lower (Variable)
Luster : Glossy
Specific gravity : 2.65 constant (variable)
Optical properties : Uniaxial
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Amethyst Mineral
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