Amethyst
VIBRANIUM LTD
Amethyst
| Property | Specification |
| Chemical Formula | SiO? (Silicon Dioxide) |
| Crystal System | Trigonal |
| Color | Purple, Violet, Light Purple, Dark Purple |
| Hardness (Mohs) | 7 |
| Specific Gravity | 2.65 |
| Refractive Index | 1.544 - 1.553 |
| Birefringence | None (Isotropic) |
| Luster | Vitreous |
| Transparency | Transparent to Translucent |
| Pleochroism | None |
| Optical Character | Uniaxial (-) |
| Fracture | Conchoidal to Uneven |