Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
Subconchoidal, Conchoidal
Poor on {120}, in traces on {001}
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
On {011}, distinct; on {001}, {013}, indistinct
PbMoO 4Walter Schumann , Gemstones of the world (2001)