Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.444.00-4.62
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven
Cleavage
None Observed
Indistinct parting on [111]
Mohs Hardness
6.5-77.5-8
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)