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
Brittle, Uneven, Brittle, Uneven
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on {001}
Perfect on [001], good on [010], imperfect on [110]
1.7 Mohs Hardness
1.8 Chemical Composition
NaCa16Si23AlO60(OH)8•64(H2O)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)