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White Opal
White Opal

Blue John
Blue John



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White Opal
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Blue John

White Opal and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

White Opal and Blue John Chemical Formula

While comparing White Opal 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 White Opal and Blue John chemical formula.

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White Opal and Blue John Specific Gravity

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