Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.63-3.93.90-4.00
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
Indistinct
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
7.5-83-3.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references