1 Physical Properties
1.1 Tenacity
1.2 Solubility
insoluble in water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Indistinct on {001}; partings on {011} and {111}
Perfect [001] good [010] poor [110]
1.7 Mohs Hardness
1.8 Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2Si 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)