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Neptunite
Neptunite

Sard
Sard



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Neptunite
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Sard

Neptunite and Sard 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)
 
-
-
-
2.58-2.63
Conchoidal
None
6.5-7
SiO 2Ulrich Henn and Claudio C.

Neptunite and Sard Chemical Formula

While comparing Neptunite and Sard 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 Sard chemical formula.

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Neptunite and Sard Specific Gravity

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