Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
3.08-3.122.93-2.96
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
{010} Perfect
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
7.53.5-4
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references