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Smithsonite
Smithsonite

Coral
Coral



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Smithsonite
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Coral

Smithsonite and Coral Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

4.00-4.652.60-2.70
1 7.18
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Fracture

Uneven, Sub-Conchoidal
Irregular

Cleavage

Perfect on [1011]
None

Mohs Hardness

5-5.53-4
2 10
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Chemical Composition

ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Ulrich Henn and Claudio C.

Smithsonite and Coral Chemical Formula

While comparing Smithsonite and Coral 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 Coral chemical formula.

  • Chemical formula of Smithsonite- ZnCO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

Smithsonite and Coral Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smithsonite and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smithsonite and Coral Optical Properties during the identification of gemstone. Specific gravity of Smithsonite is 2.60-2.70 whereas that of Coral is 2.60-2.70.