1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.20-2.403.77-3.93
1
7.18
1.5 Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)
Gems, Conchoidal, Brittle
1.6 Cleavage
Perfect on {010}, distinct on {100}
None
1.7 Mohs Hardness
1.8 Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
Ca 3Ti4+2(Fe3+2Si)O 12Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references