Tenacity
-
-
Solubility
-
Insoluble in acids
Durability
-
-
Specific Gravity
2.32-2.384.20-4.30
1
7.18
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Fracture
ConchoidalWalter Schumann
Uneven, Conchoidal
Cleavage
None
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
5.56-6.5
2
10
👆🏻
Chemical Composition
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)