1 Physical Properties
1.1 Tenacity
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.8 Specific Gravity
3.69-3.813.87-4.14
1
7.18
1.16 Fracture
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.17 Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
Poor on {120}, in traces on {001}
1.18 Mohs Hardness
1.19 Chemical Composition
BeAl 2 O 4
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references