1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Nearly insoluble in HCl and HNO3
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
Conchoidal, Brittle
1.6 Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
Distinct on {010}
1.7 Mohs Hardness
1.8 Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Not Available