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Neptunite and Kyanite Physical Properties


Kyanite and Neptunite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.19-3.23   
3.53-3.65   

Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle   
Splintery, Brittle, Metallic   

Cleavage
{110} good   
[100] perfect [010] imperfect with 79° angle between   

Mohs Hardness
5-6   
4-7   

Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)   
Not Available   

Optical Properties >>
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Neptunite and Kyanite Chemical Formula

While comparing Neptunite and Kyanite 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 Kyanite chemical formula.

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Neptunite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Neptunite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Neptunite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.

Red Gemstones

Red Gemstones


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