Physical Properties
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.702.54-2.61
1
7.18
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Fracture
-
Uneven
Cleavage
None
{001} Perfect, {010} Good
Mohs Hardness
6.5-76
2
10
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Chemical Composition
SiO 2Ulrich Henn and Claudio C.
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)