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Ruby and Cordierite Physical Properties


Cordierite and Ruby Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.97-4.05   
2.57-2.66   

Fracture
Conchoidal   
Subconchoidal, Conchoidal, Brittle   

Cleavage
No true cleavage   
Fair on {100}, poor on {001} and {010}   

Mohs Hardness
9   
7-7.5   

Chemical Composition
Al 2 O 3   
Mg2Al4Si5O18   

Optical Properties >>
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Ruby and Cordierite Chemical Formula

While comparing Ruby and Cordierite 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 Ruby and Cordierite chemical formula.

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Ruby and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.

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