1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.65-4.552.74-2.90
1
7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Gemstones (2009), Splintery
1.6 Cleavage
None, but may exhibit slight parting
Perfect on {100} and {001}
1.7 Mohs Hardness
1.8 Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.