1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.1 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.703.43-3.44
1
7.18
1.6 Fracture
Not Available
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
1.7 Cleavage
Indiscernible
None Observed
1.8 Mohs Hardness
1.11 Chemical Composition
SiO2
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references