2 Physical Properties
2.1 Tenacity
Not Available
Not Available
2.3 Solubility
Not Available
Not Available
2.5 Durability
Not Available
Not Available
2.6 Specific Gravity
Not Available3.34-3.44
1
7.18
2.7 Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
2.8 Cleavage
Not Available
{111} Indistinct, {111} Indistinct, {111} Indistinct
2.9 Mohs Hardness
2.13 Chemical Composition
Not Available
(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references