Property | Specification |
Chemical Formula | SiO? (Silicon Dioxide) |
Crystal System | Trigonal |
Color | Multicolored ( black, red, orange, yellow, blue) |
Hardness (Mohs) | 6.5 - 7 |
Specific Gravity | 2.58 - 2.64 |
Refractive Index | 1.530 - 1.540 |
Birefringence | None (Isotropic) |
Luster | Vitreous to Waxy |
Transparency | Transparent to Opaque |
Pleochroism | None |
Optical Character | Uniaxial (-) |
Dispersion | 0.013 |