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Onyx
Onyx

Coral
Coral



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X
Onyx
X
Coral

Onyx and Coral Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.70
-
Indiscernible
6.5-7
SiO2
 
-
-
-
2.60-2.70
Irregular
None
3-4
CaCO 3Ulrich Henn and Claudio C.

Onyx and Coral Chemical Formula

While comparing Onyx 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 Onyx and Coral chemical formula.

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Onyx and Coral Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx Vs Coral during the identification of gemstone. Specific gravity of Onyx is whereas that of Coral is .