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Chalcedony and Nepheline Physical Properties


Nepheline and Chalcedony Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.55-2.70   
2.55-2.65   

Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann   
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   

Cleavage
Absent   
[1010] Poor   

Mohs Hardness
6.5-7   
5-6   

Chemical Composition
SiO2   
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.   

Optical Properties >>
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Chalcedony and Nepheline Chemical Formula

While comparing Chalcedony 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 Chalcedony and Nepheline chemical formula.

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Chalcedony and Nepheline Specific Gravity

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

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