1 Physical Properties
1.2 Tenacity
1.4 Solubility
1.5 Durability
Not Available
Not Available
1.6 Specific Gravity
2.55-2.706.86-7.03
1
7.18
1.7 Fracture
Not Available
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular
1.8 Cleavage
Not Available
{100} imperfect, {110} indistinct; partings on {111} or {011}
1.9 Mohs Hardness
1.10 Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references