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Common Opal
Common Opal

Paraiba
Paraiba



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Common Opal
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Paraiba

Common Opal and Paraiba Physical Properties

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
1.98-2.503.04-3.13
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Not Available
1.6 Cleavage
Not Available
Not Available
1.7 Mohs Hardness
5.5-6.57-7.5
Amber
2 10
1.8 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Not Available

Common Opal and Paraiba Chemical Formula

While comparing Common Opal and Paraiba 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 Common Opal and Paraiba chemical formula.

  • Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
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Common Opal and Paraiba Specific Gravity

Another important criteria for qualitative analysis of gemstones is Common Opal and Paraiba Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Paraiba Optical Properties during the identification of gemstone. Specific gravity of Common Opal is 3.04-3.13 whereas that of Paraiba is 3.04-3.13.