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Onyx
Onyx

Malachite
Malachite



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Onyx
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Malachite

Onyx and Malachite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.703.25-4.10
Amber
1 7.18
1.5 Fracture
Not Available
Conchoidal, Conchoidal, Gemstones (2009), Uneven
1.6 Cleavage
Indiscernible
Perfect on { 2 01} fair on {010}
1.7 Mohs Hardness
6.5-73.5-4
Amber
2 10
1.8 Chemical Composition
SiO2
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.

  • Chemical formula of Onyx- SiO2
  • Chemical formula of Malachite- Cu2CO3(OH)2

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 and Malachite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 3.25-4.10 whereas that of Malachite is 3.25-4.10.