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Chrome-Chalcedony
Chrome-Chalcedony

Blue John
Blue John



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Chrome-Chalcedony
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Blue John

Chrome-Chalcedony and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Chrome-Chalcedony and Blue John Chemical Formula

While comparing Chrome-Chalcedony 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 Chrome-Chalcedony and Blue John chemical formula.

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Chrome-Chalcedony and Blue John Specific Gravity

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