Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
-99992.60-2.65
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
-
Perfect on {001}, very good on {010}, imperfect on {110}
Mohs Hardness
-99996-6.5
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)