Tenacity
-
Brittle
Solubility
insoluble
-
Durability
-
-
Specific Gravity
3.95-4.033.87-4.14
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
None, but may exhibit parting
Poor on {120}, in traces on {001}
Mohs Hardness
95.5-6
2
10
👆🏻
Chemical Composition
Al 2 O 3
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references