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
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
{001} Perfect, {010} Good
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
1.8 Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)