Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
-99993.69-3.81
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
-
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
-99998.5
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
BeAl 2 O 4