Tenacity
-
-
Solubility
Insoluble in acids
-
Durability
-
-
Specific Gravity
4.20-4.301.65-1.99
1
7.18
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Fracture
Uneven, Conchoidal
Uneven
Cleavage
{110} good, 100 moderate, parting on {092} and {011}
{010} Perfect, {110} Perfect
Mohs Hardness
6-6.52-2.5
2
10
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Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)