Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.3924.39
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{010} moderate, {100} imperfect
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
6.5-77.5-8
2
10
👆🏻
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)