1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.642.54-2.61
1
7.18
1.5 Fracture
Gems, Sixth Edition (2006)
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
None
{001} Perfect, {010} Good
1.7 Mohs Hardness
1.8 Chemical Composition
SiO2 (with a high level of nickel impurities )
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)