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
2.30-2.502.54-2.61
1
7.18
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
Perfect on (001)
{001} Perfect, {010} Good
1.7 Mohs Hardness
1.8 Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)