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Vesuvianite
Vesuvianite

Blue John
Blue John



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Vesuvianite
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Blue John

Vesuvianite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.32-3.43
Conchoidal
Poor on {110} and {100} very poor on {001}
6-7
Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Vesuvianite and Blue John Chemical Formula

While comparing Vesuvianite 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 Vesuvianite and Blue John chemical formula.

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Vesuvianite and Blue John Specific Gravity

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