1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
Irregular
1.6 Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
Perfect on {0001}
1.7 Mohs Hardness
1.8 Chemical Composition
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)