Emerald
Emerald
Item-No.: MIN0200 Price: 385.00 EUR
Rila Mtn (Rila Planina), Kyustendil Oblast, Bulgaria
| Synonyms: | Agee |
| Variety of: | Beryl |
| IMA Status: | Not recognize |
| Classification: | Silicates, Cyclosilikates |
| Chemical formula: | Be3(Al,Cr)2Si6O18 |
| Crystal system: | Hexagonal |
| Density (g/cm3): | 2,63 - 2,80 |
| Tenacity: | Brittle |
| Cleavage: | Indistinct |
| Fracture: | Conchoidal to splintery |
| Hardness (Mohs): | 7,5 - 8 |
| Colour: | Light green to dark green |
| Lustre: | Vitreous |
| Streak: | White |
| Transparency: | Transparent, partly translucent |
| Application: | Precious stone, Gemstone |