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, Conchoidal, Gems, Sixth Edition (2006)
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
1.8 Chemical Composition
(Na,Ca)1-2Si3-2O8
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)