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Neptunite
Neptunite

Common Opal
Common Opal



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Neptunite
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Common Opal

Neptunite and Common Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Neptunite and Common Opal Chemical Formula

While comparing Neptunite and Common Opal 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 Neptunite and Common Opal chemical formula.

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Neptunite and Common Opal Specific Gravity

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