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Calcite
Calcite

Coral
Coral



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Calcite
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Coral

Calcite and Coral Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.67-2.732.60-2.70
1 7.18
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Fracture

Conchoidal
Irregular

Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55
None

Mohs Hardness

33-4
2 10
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Chemical Composition

CaCO 3Ulrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.

Calcite and Coral Chemical Formula

While comparing Calcite 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 Calcite and Coral chemical formula.

  • Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
  • Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

Calcite and Coral Specific Gravity

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