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Gahnite and Rubellite Physical Properties


Rubellite and Gahnite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.00-4.62   
3.01-3.06   

Fracture
Conchoidal, Uneven   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Indistinct parting on [111]   
Not Available   

Mohs Hardness
7.5-8   
7-7.5   

Chemical Composition
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.   

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Gahnite and Rubellite Chemical Formula

While comparing Gahnite and Rubellite 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 Gahnite and Rubellite chemical formula.

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Gahnite and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.

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