| Property | Specification |
| Chemical Formula | SiO₂ |
| Color | Colorless, white, gray, or may have hints of various colors |
| Hardness (Mohs Scale) | 7 |
| Density | 2.65 g/cm³ |
| Crystal System | Trigonal (Hexagonal in some varieties) |
| Luster | Vitreous, may be greasy or waxy in some forms |
| Cleavage | None |
| Fracture | Conchoidal |
| Streak | White |
| Transparency | Transparent to translucent |
| Refractive Index | 1.54 - 1.55 |
| Specific Gravity | 2.65 |
| Solubility | Insoluble in water |
| Magnetic Properties | Non-magnetic |
