1 Physical Properties
1.1 Tenacity
1.2 Solubility
Insoluble in acids
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
4.20-4.302.33-2.37
1
7.18
1.5 Fracture
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
1.6 Cleavage
{110} good, 100 moderate, parting on {092} and {011}
Perfect on {010}, good on {100}
1.7 Mohs Hardness
1.8 Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Be 2BO 3(OH)Ulrich Henn and Claudio C.