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Cordierite
Cordierite

Pyrope
Pyrope



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Cordierite
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Pyrope

Cordierite and Pyrope Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18
 
-
insoluble in water
-
3.62-3.87
Conchoidal
None
7-7.5
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Cordierite and Pyrope Chemical Formula

While comparing Cordierite and Pyrope 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 Cordierite and Pyrope chemical formula.

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Cordierite and Pyrope Specific Gravity

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