Sulphur and Black Opal Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.05-2.08
  
1.97-2.22
  
Fracture
Not Available
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Not Available
  
Not Available
  
Mohs Hardness
Not Available
  
6-6.5
  
Chemical Composition
SWalter Schumann , Gemstones of the world (2001)
  
SiO 2 + H 2OUlrich Henn and Claudio C.
  
Sulphur and Black Opal Chemical Formula
While comparing Sulphur and Black 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 Sulphur and Black Opal chemical formula.
- Chemical formula of Sulphur- SWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Sulphur and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sulphur and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sulphur and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Sulphur is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.