Opal Australia and Fire Opal Physical Properties
Tenacity
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Not Available
  
Solubility
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Not Available
  
Durability
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Specific Gravity
Not Available
  
1.97-2.22
  
Fracture
Not Available
  
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Cleavage
Not Available
  
Not Available
  
Mohs Hardness
5.5-6.5
  
6-6.5
  
Chemical Composition
Not Available
  
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
  
Opal Australia and Fire Opal Chemical Formula
While comparing Opal Australia and Fire 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 Opal Australia and Fire Opal chemical formula.
>- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Opal Australia and Fire Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal Australia and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal Australia and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Opal Australia is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.