Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.25-3.503.95-4.10
1
7.18
👆🏻
Fracture
Conchoidal, Fibrous
Uneven
Cleavage
{001} perfect and {100} imperfect
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
6-73.5-4
2
10
👆🏻
Chemical Composition
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references