Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.653.23-3.26
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
Perfect on {010} imperfect on {100}
Mohs Hardness
6-6.56.5-7
2
10
👆🏻
Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)