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Opal
Opal

Dumortierite
Dumortierite



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Opal
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Dumortierite

Opal and Dumortierite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O
 
-
-
-
3.26-3.41
Fibrous, ConchoidalWalter Schumann
Distinct on {100}, poor on {110}; parting on {001}
7-8.5
AlAl6O3BSi3O18

Opal and Dumortierite Chemical Formula

While comparing Opal and Dumortierite 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 Opal and Dumortierite chemical formula.

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Opal and Dumortierite Specific Gravity

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