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Andradite and Neptunite Physical Properties


Neptunite and Andradite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.70-4.10   
3.19-3.23   

Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle   

Cleavage
none   
{110} good   

Mohs Hardness
6.5-7   
5-6   

Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)   
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Andradite and Neptunite Chemical Formula

While comparing Andradite 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 Andradite and Neptunite chemical formula.

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Andradite and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.

Green Gemstones

Green Gemstones


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