Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.25-3.503.08-3.12
1
7.18
👆🏻
Fracture
Conchoidal, Fibrous
ConchoidalWalter Schumann
Cleavage
{001} perfect and {100} imperfect
{010} Perfect
Mohs Hardness
6-77.5
2
10
👆🏻
Chemical Composition
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references