Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Perfect on {010} imperfect on {100}
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Subconchoidal, Conchoidal
Poor on {120}, in traces on {001}
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references