1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.17-3.242.56-2.62
1
7.18
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
(0001) indistinct
From the Greek for oblique and fracture, descriptive of the cleavage
1.7 Mohs Hardness
1.8 Chemical Composition
SiCArthur Thomas , Gemstones (2009)
(Na,K)AlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)