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Grossular
Grossular

Neptunite
Neptunite



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Grossular
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Neptunite

Grossular and Neptunite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.55-3.73
Conchoidal, Uneven
none
7-7.5
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
Brittle
-
-
3.19-3.23
Conchoidal
{110} good
5-6
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)

Grossular and Neptunite Chemical Formula

While comparing Grossular 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 Grossular and Neptunite chemical formula.

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Grossular and Neptunite Specific Gravity

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