Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
{110} good, 100 moderate, parting on {092} and {011}
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)