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Kyanite
Kyanite

Smithsonite
Smithsonite



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Kyanite
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Smithsonite

Kyanite and Smithsonite Physical Properties

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
3.53-3.65
4.00-4.65
1.5 Fracture
Splintery, Brittle, Metallic
Uneven, Sub-Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
1.6 Cleavage
[100] perfect [010] imperfect with 79° angle between
Perfect on [1011]
1.7 Mohs Hardness
4-7
5-5.5
1.8 Chemical Composition
Not Available
ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Smithsonite Chemical Formula

While comparing Kyanite and Smithsonite 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 Smithsonite chemical formula.

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  • Chemical formula of Smithsonite- ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Kyanite and Smithsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Smithsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Smithsonite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 4.00-4.65 whereas that of Smithsonite is 4.00-4.65.