Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
On {10 1 0}, perfect; parting on {000 1 }
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
{110} good, 100 moderate, parting on {092} and {011}
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)