Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Sub-Conchoidal, Conchoidal
Distinct on [110], parting on {221}
Subconchoidal, Conchoidal
Poor on {120}, in traces on {001}
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references