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Neptunite
Neptunite

Kyanite
Kyanite



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Neptunite
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Kyanite

Neptunite and Kyanite Physical Properties

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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)
 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5

Neptunite and Kyanite Chemical Formula

While comparing Neptunite and Kyanite 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 Kyanite chemical formula.

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Neptunite and Kyanite Specific Gravity

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