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Boulder Opal
Boulder Opal

Neptunite
Neptunite



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Boulder Opal
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Neptunite

Boulder Opal and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Boulder Opal and Neptunite Chemical Formula

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

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Boulder Opal and Neptunite Specific Gravity

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