1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.847-1.8523.05-3.21
1
7.18
1.5 Fracture
Brittle, Conchoidal
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Poor to indistinct on {010}
Good on {110}, poor on {100}
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references