Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.394.95-5.0
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Imperfect to indistinct on {10 1 0}, parting on {0001}
Mohs Hardness
7.5-84-5
2
10
👆🏻
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
(Ce,La)(CO 3)FMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references