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Hawks Eye
Hawks Eye

Blue John
Blue John



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Hawks Eye
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Blue John

Hawks Eye and Blue John Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
Not Available3.00-3.25
Amber
1 7.18
1.5 Fracture
Not Available
Not Available
1.6 Cleavage
Not Available
Not Available
1.7 Mohs Hardness
7Not Available
Amber
2 10
1.8 Chemical Composition
Not Available
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Hawks Eye and Blue John Chemical Formula

While comparing Hawks Eye 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 Hawks Eye and Blue John chemical formula.

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  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Hawks Eye and Blue John Specific Gravity

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