Common Opal and Sunstone Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.50
  
2.62-2.65
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Gemstones of the world (2001)
  
Cleavage
Not Available
  
001
  
Mohs Hardness
5.5-6.5
  
6
  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Common Opal and Sunstone Chemical Formula
While comparing Common Opal and Sunstone 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 Sunstone chemical formula.
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Common Opal and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Common Opal and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Common Opal is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.