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Zinnwaldite
Zinnwaldite

Blue John
Blue John



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Zinnwaldite
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Blue John

Zinnwaldite and Blue John Physical Properties

1 Physical Properties
1.1 Tenacity
Elastic
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.9-3.13.00-3.25
Amber
1 7.18
1.5 Fracture
Uneven
Not Available
1.6 Cleavage
Perfect basal {001}
Not Available
1.7 Mohs Hardness
3.5-4.0Not Available
Amber
2 10
1.8 Chemical Composition
Not Available
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Zinnwaldite and Blue John Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Blue John chemical formula.

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

Zinnwaldite and Blue John Specific Gravity

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