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)
Irregular, Brittle, Conchoidal
1.6 Cleavage
Perfect [001] good [010] poor [110]
On {011}, distinct; on {001}, {013}, indistinct
1.7 Mohs Hardness
1.8 Chemical Composition
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
PbMoO 4Walter Schumann , Gemstones of the world (2001)