Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.82-3.97
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
{001} Perfect, {010} Good
Perfect on [001] and [011]
Mohs Hardness
6-6.55.5-6
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references