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Chalcedony
Chalcedony

Neptunite
Neptunite



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Chalcedony
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Neptunite

Chalcedony and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
Soluble
-
2.55-2.70
Uneven, Splintery, Conchoidal
Absent
6.5-7
SiO2
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Chalcedony and Neptunite Chemical Formula

While comparing Chalcedony 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 Chalcedony and Neptunite chemical formula.

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Chalcedony and Neptunite Specific Gravity

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