Sapphire
Sapphire
Andranondambo, Maromby Commune, Amboasary Department, Anosy (Fort Dauphin) Region, Tuléar (Toliara) Province, Madagaskar
Item-No.: 3606
Price: 91.00 EUR
| Synonyms: | Azulinhas, Bengal Amethyst, Hyacinthos, Salamstein, Ultralite |
| Variety of: | Corundum |
| Classification: | Oxides |
| Chemical formula: | Al2O3 |
| Crystal system: | Trigonal |
| Density (g/cm3): | 3.98 - 4.1 measured, 3.997 calculated |
| Tenacity: | Brittle |
| Cleavage: | None observed |
| Fracture: | Irregular, uneven, conchoidal |
| Hardness (Mohs): | 9 |
| Colour: | Colourless, blue, pink, yellow, grey, golden-brown |
| Lustre: | Adamantine, vitreous, pearly |
| Streak: | White |
| Transparency: | Transparent, translucent, opaque |
| Application: | Gemstone and abrasive |