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Neptunite and Grandidierite Physical Properties


Grandidierite and Neptunite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.19-3.23   
2.85-3.00   

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

Cleavage
{110} good   
Perfect   

Mohs Hardness
5-6   
7.5   

Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)   
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.   

Optical Properties >>
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Neptunite and Grandidierite Chemical Formula

While comparing Neptunite and Grandidierite 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 Grandidierite chemical formula.

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Neptunite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Neptunite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.

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Red Gemstones


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