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Blue John
Blue John

Riebeckite
Riebeckite



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Blue John
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Riebeckite

Blue John and Riebeckite 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
-
-
3.28-3.44
Uneven, Splintery
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
5.0-6.0
Na2Fe2+3Fe3+2Si8O22(OH)2

Blue John and Riebeckite Chemical Formula

While comparing Blue John and Riebeckite 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 Riebeckite chemical formula.

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Blue John and Riebeckite Specific Gravity

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