Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.87-4.143.69-3.81
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
-
Cleavage
Poor on {120}, in traces on {001}
Perfect
Mohs Hardness
5.5-68.5
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAl 2O 4Arthur Thomas , Gemstones (2009)