Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.87-4.142.60-2.90
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Conchoidal, Irregular
Cleavage
Poor on {120}, in traces on {001}
Imperfect on {0001}
Mohs Hardness
5.5-67.5-8
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Be3Al2Si6O18