Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.85-6.153.25
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Fair in four directions forming octahedrons
Imperfect in one direction
Mohs Hardness
3.5-45-5.5
2
10
👆🏻
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)