Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
-99993.05-3.21
1
7.18
👆🏻
Fracture
-
Uneven, Subconchoidal, Splintery
Cleavage
-
Good on {110}, poor on {100}
Mohs Hardness
-99997.5
2
10
👆🏻
Chemical Composition
SiO2, Al2O3, CaO, MgO, FeO
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references