Common Opal and Sulfur Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.50
  
Not Available
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
(e.g. graphite).
  
Cleavage
Not Available
  
{???} Imperfect, {???} Imperfect
  
Mohs Hardness
5.5-6.5
  
Not Available
  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  
Not Available
  
Common Opal and Sulfur Chemical Formula
While comparing Common Opal and Sulfur 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 Sulfur chemical formula.
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
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Common Opal and Sulfur Specific Gravity
Another important criteria for qualitative analysis of gemstones is Common Opal and Sulfur Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Sulfur Optical Properties during the identification of gemstone. Specific gravity of Common Opal is Not Available whereas that of Sulfur is Not Available.