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Order items by
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



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Dr. Petr Zajicek
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