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Rubellite and Nepheline Physical Properties


Nepheline 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   
2.55-2.65   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   

Cleavage
Not Available   
[1010] Poor   

Mohs Hardness
7-7.5   
5-6   

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.   
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.   

Optical Properties >>
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Rubellite and Nepheline Chemical Formula

While comparing Rubellite and Nepheline 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 Nepheline chemical formula.

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Rubellite and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.

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