1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
1.4 Durability
Not Available
Not Available
1.6 Specific Gravity
Not Available3.65-4.55
1
7.18
1.4 Fracture
(e.g. graphite).
ConchoidalArthur Thomas, Gemstones (2009)
1.5 Cleavage
{???} Imperfect, {???} Imperfect
None, but may exhibit slight parting
1.6 Mohs Hardness
1.12 Chemical Composition
Not Available
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)