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Hauyne and Blue John Physical Properties


Blue John and Hauyne Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Gelatinises in acids   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.4-2.5   
3.00-3.25   

Fracture
Uneven, Conchoidal, Brittle   
Not Available   

Cleavage
Distinct on {110}   
Not Available   

Mohs Hardness
5-6   
Not Available   

Chemical Composition
(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2   
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Hauyne and Blue John Chemical Formula

While comparing Hauyne and Blue John 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 Hauyne and Blue John chemical formula.

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Hauyne and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hauyne and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hauyne and Blue John Optical Properties during the identification of gemstone. Specific gravity of Hauyne is 3.00-3.25 whereas that of Blue John is 3.00-3.25.

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Blue Gemstones


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