Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.69-3.815.00-5.30
1
7.18
👆🏻
Fracture
-
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Perfect
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
8.56
2
10
👆🏻
Chemical Composition
BeAl 2O 4Arthur Thomas , Gemstones (2009)
Fe 2O 3Arthur Thomas , Gemstones (2009)