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Dumortierite
Dumortierite

Neptunite
Neptunite



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Dumortierite
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Neptunite

Dumortierite and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.26-3.41
Fibrous, ConchoidalWalter Schumann
Distinct on {100}, poor on {110}; parting on {001}
7-8.5
AlAl6O3BSi3O18
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Dumortierite and Neptunite Chemical Formula

While comparing Dumortierite 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 Dumortierite and Neptunite chemical formula.

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Dumortierite and Neptunite Specific Gravity

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