Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.85-6.153.08-3.12
1
7.18
👆🏻
Fracture
Conchoidal
ConchoidalWalter Schumann
Cleavage
Fair in four directions forming octahedrons
{010} Perfect
Mohs Hardness
3.5-47.5
2
10
👆🏻
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references