1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.6 Specific Gravity
2.58-2.643.65-4.55
1
7.18
1.10 Fracture
Gems, Sixth Edition (2006)
ConchoidalArthur Thomas, Gemstones (2009)
1.11 Cleavage
Indiscernible
None, but may exhibit slight parting
1.12 Mohs Hardness
1.14 Chemical Composition
SiO2
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)