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