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Blue John and Jet Physical Properties


Jet
Jet and Blue John Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.00-3.25   
1.19-1.35   

Fracture
Not Available   
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references   

Cleavage
Not Available   
Not Available   

Mohs Hardness
Not Available   
2.5-4   

Chemical Composition
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)   
Not Available   

Optical Properties >>
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Blue John and Jet Chemical Formula

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

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Blue John and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Jet Optical Properties during the identification of gemstone. Specific gravity of Blue John is 1.19-1.35 whereas that of Jet is 1.19-1.35.

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Blue Gemstones


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