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Prase Opal
Prase Opal

Onyx
Onyx



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Prase Opal
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Onyx

Prase Opal and Onyx 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
1.98-2.252.55-2.70
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
1.6 Cleavage
Not Available
Indiscernible
1.7 Mohs Hardness
5-6.56.5-7
Amber
2 10
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
SiO2

Prase Opal and Onyx Chemical Formula

While comparing Prase Opal and Onyx 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 Prase Opal and Onyx chemical formula.

  • Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Onyx- SiO2

Prase Opal and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prase Opal and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prase Opal and Onyx Optical Properties during the identification of gemstone. Specific gravity of Prase Opal is 2.55-2.70 whereas that of Onyx is 2.55-2.70.