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Nickeline
Nickeline

Blue John
Blue John



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Nickeline
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Blue John

Nickeline and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
-9999
Conchoidal, Uneven
{1010} Imperfect, {0001} Imperfect
5-5.5
NiAs
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Nickeline and Blue John Chemical Formula

While comparing Nickeline 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 Nickeline and Blue John chemical formula.

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Nickeline and Blue John Specific Gravity

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