1 Physical Properties
1.1 Tenacity
Not Available
Slightly sectile
1.2 Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Gemstones (2009), Brittle
1.6 Cleavage
Not Available
Prismatic {10 1 0}, perfect
1.7 Mohs Hardness
1.8 Chemical Composition
Al 2Be 3Si 6O 18Martin H.
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references