1 Physical Properties
1.1 Tenacity
1.2 Solubility
Effervesces in cold
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Splintery
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Perfect on {100} and {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