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Rubellite and Bytownite Physical Properties


Bytownite and Rubellite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.01-3.06   
2.72-2.75   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Uneven, Uneven, Gems, Sixth Edition (2006)   

Cleavage
Not Available   
Perfect on [001], good on [010], imperfect on [110]   

Mohs Hardness
7-7.5   
6-6.5   

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.   
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Rubellite and Bytownite Chemical Formula

While comparing Rubellite and Bytownite 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 Bytownite chemical formula.

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Rubellite and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.

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