Topaz and Pyrite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble in water
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
5.00-5.20
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Cleavage
[001] Perfect
Indistinct on {001}; partings on {011} and {111}
Chemical Composition
Al2SiO4(F,OH)2
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Pyrite Chemical Formula
While comparing Topaz and Pyrite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Topaz and Pyrite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.