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Wulfenite
Wulfenite

Blue John
Blue John



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Wulfenite
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Blue John

Wulfenite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
6.50-7.00
Irregular, Conchoidal
On {011}, distinct; on {001}, {013}, indistinct
3
PbMoO 4Walter Schumann , Gemstones of the world (2001)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Wulfenite and Blue John Chemical Formula

While comparing Wulfenite 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 Wulfenite and Blue John chemical formula.

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Wulfenite and Blue John Specific Gravity

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