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Neptunite
Neptunite

Kyanite
Kyanite



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Neptunite
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Kyanite

Neptunite and Kyanite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.19-3.233.53-3.65
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Splintery, Brittle, Metallic
1.6 Cleavage
{110} good
[100] perfect [010] imperfect with 79° angle between
1.7 Mohs Hardness
5-64-7
Amber
2 10
1.8 Chemical Composition
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)
Not Available

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.

  • Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)
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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.