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Smithsonite
Smithsonite

Kyanite
Kyanite



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Smithsonite
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Kyanite

Smithsonite and Kyanite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

4.00-4.653.53-3.65
1 7.18
👆🏻

Fracture

Uneven, Sub-Conchoidal
Splintery

Cleavage

Perfect on [1011]
[100] perfect [010] imperfect with 79° angle between

Mohs Hardness

5-5.54-7
2 10
👆🏻

Chemical Composition

ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al2SiO5

Smithsonite and Kyanite Chemical Formula

While comparing Smithsonite 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 Smithsonite and Kyanite chemical formula.

  • Chemical formula of Smithsonite- ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Kyanite- Al2SiO5

Smithsonite and Kyanite Specific Gravity

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