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
Conchoidal, Uneven, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Imperfect on {001}, indistinct on {011}
Perfect on [001], good on [010], imperfect on [110]
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)