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Coral
Coral

Hematite
Hematite



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Coral
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Hematite

Coral and Hematite Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.60-2.705.00-5.30
1 7.18
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Fracture

Irregular
Uneven, ConchoidalWalter Schumann, Conchoidal

Cleavage

None
None, may show partings on {0001} and {10 1 1}

Mohs Hardness

3-46
2 10
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Chemical Composition

CaCO 3Ulrich Henn and Claudio C.
Fe 2O 3Arthur Thomas , Gemstones (2009)

Coral and Hematite Chemical Formula

While comparing Coral and Hematite 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 Hematite chemical formula.

  • Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
  • Chemical formula of Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Coral and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral and Hematite Optical Properties during the identification of gemstone. Specific gravity of Coral is 5.00-5.30 whereas that of Hematite is 5.00-5.30.