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Onyx
Onyx

Malachite
Malachite



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X
Onyx
X
Malachite

Onyx and Malachite 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
 
-
-
-
3.25-4.10
Conchoidal, Uneven
Perfect on { 2 01} fair on {010}
3.5-4
Cu2CO3(OH)2

Onyx and Malachite Chemical Formula

While comparing Onyx and Malachite 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 Malachite chemical formula.

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Onyx and Malachite Specific Gravity

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