Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.65-2.903.69-3.81
1
7.18
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Fracture
-
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
{001} Perfect
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
-99998.5
2
10
👆🏻
Chemical Composition
Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAl 2 O 4