Quartz ( Pink, White, Clear)
| Feature | Specification |
| Chemical Formula | SiO₂ |
| Color | Colorless, white, purple, pink, yellow, brown |
| Hardness | 7 on the Mohs scale |
| Density | 2.65 g/cm³ |
| Luster | Vitreous (glassy) |
| Crystal System | Hexagonal |
| Cleavage | None (conchoidal fracture) |
| Transparency | Transparent to translucent |
| Occurrence | Found in igneous, sedimentary, and metamorphic rocks |
| Uses | Jewelry, electronics, watches, glass, construction |