1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalGemdat.org, Uneven
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
Perfect on {001}, good on {210}, poor on {010}
1.7 Mohs Hardness
1.8 Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references