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Prase
Prase

Opal
Opal



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Prase
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Opal

Prase and Opal Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
BrittleWalter Schumann
1.2 Solubility
Not Available
hot salt water
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.64-2.691.98-2.25
Amber
1 7.18
1.5 Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
1.6 Cleavage
Not Available
None
1.7 Mohs Hardness
75-6.5
Amber
2 10
1.8 Chemical Composition
SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
SiO2 · nH2O

Prase and Opal Chemical Formula

While comparing Prase and Opal 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 and Opal chemical formula.

  • Chemical formula of Prase- SiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Opal- SiO2 · nH2O

Prase and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prase and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prase and Opal Optical Properties during the identification of gemstone. Specific gravity of Prase is 1.98-2.25 whereas that of Opal is 1.98-2.25.