1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Insoluble in acids
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, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
{110} good, 100 moderate, parting on {092} and {011}
1.7 Mohs Hardness
1.8 Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)