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Common Opal
Common Opal

Cordierite Iolite
Cordierite Iolite



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Common Opal
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Cordierite Iolite

Common Opal and Cordierite Iolite 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)
 
-
-
-
2.56-2.66
Uneven, ConchoidalWalter Schumann
Distinct
7-7.5
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.

Common Opal and Cordierite Iolite Chemical Formula

While comparing Common Opal and Cordierite Iolite 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 Cordierite Iolite chemical formula.

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Common Opal and Cordierite Iolite Specific Gravity

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