Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.85-6.154.39
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
Fair in four directions forming octahedrons
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
3.5-47.5-8
2
10
👆🏻
Chemical Composition
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)