Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.34-2.513.52
1
7.18
👆🏻
Fracture
-
-
Cleavage
None
{100} Perfect, {001} Perfect
Mohs Hardness
-99995-5.5
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)