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Sapphire and Cordierite Iolite Physical Properties


Cordierite Iolite and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
insoluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
2.56-2.66   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
None, but may exhibit parting   
Not Available   

Mohs Hardness
9   
7-7.5   

Chemical Composition
Al 2 O 3   
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.   

Optical Properties >>
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Sapphire and Cordierite Iolite Chemical Formula

While comparing Sapphire 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 Sapphire and Cordierite Iolite chemical formula.

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Sapphire and Cordierite Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Cordierite Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Cordierite Iolite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.56-2.66 whereas that of Cordierite Iolite is 2.56-2.66.

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