Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.3923.05-3.21
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
{010} moderate, {100} imperfect
None
Mohs Hardness
6.5-77-7.5
2
10
👆🏻
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)