Chemical Formula
SiO2
Color
White, Blue, Red, Green, Yellow, Orange, Brown, Gray, Black, Banded, Multicolored
Hardness
6.5 - 7
Crystal System
Hexagonal
Refractive Index
1.54 - 1.55
SG
2.63 - 2.65
Transparency
Opaque
Double Refraction
.009
Luster
Vitreous
Cleavage
Indiscernible
Mineral Class
Quartz (Chalcedony). See also the Jasper mineral page.
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