Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.82-3.972.90-3.10
1
7.18
👆🏻
Fracture
Subconchoidal, Conchoidal
Splintery, Granular
Cleavage
Perfect on [001] and [011]
None
Mohs Hardness
5.5-66-6.5
2
10
👆🏻
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references