Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.82-3.973.03-3.18
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
Perfect on [001] and [011]
{???} Indistinct
Mohs Hardness
5.5-67-7.5
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)