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Coral
Coral

Ruby
Ruby



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Coral
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Ruby

Coral and Ruby Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.60-2.703.97-4.05
1 7.18
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Fracture

Irregular
Conchoidal

Cleavage

None
No true cleavage

Mohs Hardness

3-49
2 10
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Chemical Composition

CaCO 3Ulrich Henn and Claudio C.
Al 2 O 3

Coral and Ruby Chemical Formula

While comparing Coral and Ruby 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 Coral and Ruby chemical formula.

  • Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
  • Chemical formula of Ruby- Al 2 O 3

Coral and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral and Ruby Optical Properties during the identification of gemstone. Specific gravity of Coral is 3.97-4.05 whereas that of Ruby is 3.97-4.05.