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Kyanite
Kyanite

Pyrite
Pyrite



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Kyanite and Pyrite Physical Properties

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1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
insoluble in water
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.53-3.65
5.00-5.20
1.5 Fracture
Splintery, Brittle, Metallic
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
1.6 Cleavage
[100] perfect [010] imperfect with 79° angle between
Indistinct on {001}; partings on {011} and {111}
1.7 Mohs Hardness
4-7
6-6.5
1.8 Chemical Composition
Not Available
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Pyrite Chemical Formula

While comparing Kyanite and Pyrite 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 Kyanite and Pyrite chemical formula.

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  • Chemical formula of Pyrite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.