Tenacity
-
Sectile
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.212.39
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Splintery
Irregular
Cleavage
Good on {110}, poor on {100}
Perfect on {0001}
Mohs Hardness
7.52.5
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)