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Common Opal
Common Opal

Pyrite
Pyrite



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Common Opal
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Pyrite

Common Opal and Pyrite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
 
Brittle
insoluble in water
-
5.00-5.20
Uneven, Conchoidal, ConchoidalWalter Schumann
Indistinct on {001}; partings on {011} and {111}
6-6.5
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Common Opal and Pyrite Chemical Formula

While comparing Common Opal 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 Common Opal and Pyrite chemical formula.

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Common Opal and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Common Opal and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal Vs Pyrite during the identification of gemstone. Specific gravity of Common Opal is whereas that of Pyrite is .