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Onyx
Onyx
☒

Precious coral
Precious coral
☒



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X
Onyx
X
Precious coral

Onyx and Precious coral Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.55-2.70
-
Indiscernible
6.5-7
SiO2
 
-
-
-
-9999
-
None
3.5
CaCO3

Onyx and Precious coral Chemical Formula

While comparing Onyx and Precious 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 Precious coral chemical formula.

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Onyx and Precious coral Specific Gravity

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