Beryl
Beryl
Item-No.: MINS2059 Price: 42.00 EUR
Poběžovice, Domažlice District, Plzeň Region, Czech Republic
| Synonyms: | Berylite, Berylle, Berylls |
| Classification: | Silicates, Cyclosilikates |
| Chemical formula: | Be3Al2Si6O18 |
| Crystal system: | Hexagonal |
| Density (g/cm3): | 2,68 - 2,72 |
| Tenacity: | Brittle |
| Cleavage: | Indistinct |
| Fracture: | Conchoidal |
| Hardness (Mohs): | 7,5 - 8 |
| Colour: | Colorless, green, blue, yellow, white, pink, red |
| Lustre: | Vitreous |
| Streak: | White |
| Application: | Main ore of beryllium, Gemstone |