Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.395.00-5.30
1
7.18
👆🏻
Fracture
Uneven
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
None, may show partings on {0001} and {10 1 1}
Mohs Hardness
7.5-86
2
10
👆🏻
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Fe 2O 3Arthur Thomas , Gemstones (2009)