| Color | White |
| Hardness | 6.5 - 7.0 (Mohs scale) |
| Density | 2.65 - 2.70 g/cm³ |
| Transparency | Translucent to Opaque |
| Fracture | Conchoidal |
| Luster | Vitreous (Glass-like) |
| Cleavage | None |
| Streak | White |
| Composition | Mainly silica (SiO2) |
| Specific Gravity | 2.60 - 2.75 g/cm³ |
| Refractive Index | 1.45 - 1.55 |
| Surface | Smooth, Polished |
| Texture | Fine to Medium-grained |
| Shape | Varied (often slabs) |