Tenacity
-
Brittle
Solubility
-
insoluble in water
Durability
-
-
Specific Gravity
3.63-3.95.00-5.20
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal, ConchoidalWalter Schumann
Cleavage
Indistinct
Indistinct on {001}; partings on {011} and {111}
Mohs Hardness
7.5-86-6.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references