Topaz and Pyrite Marcasite Physical Properties

Topaz and Pyrite Marcasite Chemical Formula

While comparing Topaz and Pyrite Marcasite 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 Marcasite chemical formula.

• Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
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Topaz and Pyrite Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Pyrite Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Pyrite Marcasite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 4.9-5.2 whereas that of Pyrite Marcasite is 4.9-5.2.