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Topaz and Marcasite Physical Properties


Marcasite and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
4.80-4.90   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven   

Cleavage
[001] Perfect   
{010} Indistinct   

Mohs Hardness
8   
6-6.5   

Chemical Composition
Al2SiO4(F,OH)2   
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Topaz and Marcasite Chemical Formula

While comparing Topaz and 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 Marcasite chemical formula.

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Topaz and Marcasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.

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