1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.5 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.8 Specific Gravity
3.05-3.212.75-2.80
1
7.18
1.9 Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Uneven, Granular
1.10 Cleavage
Good on {110}, poor on {100}
no true cleavage
1.11 Mohs Hardness
1.22 Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Not Available