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Blue John and Zircon Physical Properties


Zircon and Blue John Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.00-3.25   
3.93-4.73   

Fracture
Not Available   
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Not Available   
{110} and {111}   

Mohs Hardness
Not Available   
7.5   

Chemical Composition
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)   
ZrSiO4   

Optical Properties >>
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Blue John and Zircon Chemical Formula

While comparing Blue John and Zircon 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 Zircon chemical formula.

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Blue John and Zircon Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Zircon Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Zircon Optical Properties during the identification of gemstone. Specific gravity of Blue John is 3.93-4.73 whereas that of Zircon is 3.93-4.73.

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Blue Gemstones


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