Prase, a variety of Quartz
| Synonyms: | Edinite, Prasem, Prasio, Prasius |
| Variety of: | Quartz |
| Classification: | Oxides |
| Chemical formula: | SiO2 |
| Crystal system: | Trigonal |
| Density (g/cm3): | 2,65 |
| Tenacity: | Brittle |
| Cleavage: | none |
| Fracture: | Conchoidal |
| Hardness (Mohs): | 7 |
| Colour: | Leek-green |
| Lustre: | Vitreous, silk luster, dull |
| Streak: | White |