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Sapphire and Gahnite Physical Properties


Gahnite 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   
4.00-4.62   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Conchoidal, Uneven   

Cleavage
None, but may exhibit parting   
Indistinct parting on [111]   

Mohs Hardness
9   
7.5-8   

Chemical Composition
Al 2 O 3   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Sapphire and Gahnite Chemical Formula

While comparing Sapphire and Gahnite 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 Gahnite chemical formula.

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Sapphire and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.

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