Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
-99995.50-5.90
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
-
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
-99994
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)