Tenacity
-
Brittle
Solubility
insoluble in common solvents
-
Durability
-
-
Specific Gravity
2.653.82-3.97
1
7.18
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Fracture
Conchoidal, ConchoidalWalter Schumann
Subconchoidal, Conchoidal
Cleavage
Indiscernible
Perfect on [001] and [011]
Mohs Hardness
75.5-6
2
10
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Chemical Composition
SiO2
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references