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Sard
Sard

Neptunite
Neptunite



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Sard
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Neptunite

Sard and Neptunite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.58-2.63
Conchoidal
None
6.5-7
SiO 2Ulrich 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)

Sard and Neptunite Chemical Formula

While comparing Sard 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 Sard and Neptunite chemical formula.

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Sard and Neptunite Specific Gravity

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