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Rubellite and Gahnite Physical Properties


Gahnite and Rubellite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.01-3.06   
4.00-4.62   

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

Cleavage
Not Available   
Indistinct parting on [111]   

Mohs Hardness
7-7.5   
7.5-8   

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

Optical Properties >>
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Rubellite and Gahnite Chemical Formula

While comparing Rubellite 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 Rubellite and Gahnite chemical formula.

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Rubellite and Gahnite Specific Gravity

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

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