Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.87-4.143.21-3.38
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Irregular/uneven, Uneven
Cleavage
Poor on {120}, in traces on {001}
Perfect on {001}
Mohs Hardness
5.5-66-7
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2Al 3(SiO 4) 3(OH)Walter Schumann , Gemstones of the world (2001) More from other references