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Blue John
Blue John

Vlasovite
Vlasovite



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Blue John
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Vlasovite

Blue John and Vlasovite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Nearly insoluble in HCl and HNO3
-
2.97
Conchoidal
Distinct on {010}
6
-

Blue John and Vlasovite Chemical Formula

While comparing Blue John and Vlasovite 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 Vlasovite chemical formula.

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Blue John and Vlasovite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Vlasovite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John Vs Vlasovite during the identification of gemstone. Specific gravity of Blue John is whereas that of Vlasovite is .