1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalGemdat.org, Uneven
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
1.6 Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Not Available
1.7 Mohs Hardness
1.8 Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)