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Onyx
Onyx

Ruby
Ruby



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X
Onyx
X
Ruby

Onyx and Ruby 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
 
Brittle
-
-
3.97-4.05
Conchoidal
No true cleavage
9
Al 2 O 3

Onyx and Ruby Chemical Formula

While comparing Onyx 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 Onyx and Ruby chemical formula.

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Onyx and Ruby Specific Gravity

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