1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Gems, Sixth Edition (2006)
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
1.6 Cleavage
Indiscernible
{100} imperfect, {110} indistinct; partings on {111} or {011}
1.7 Mohs Hardness
1.8 Chemical Composition
Quartz: SiO2 Rutile: TiO2
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references