Carnelian and Precious Opal Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.58-2.64
  
1.98-2.25
  
Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
  
Cleavage
Absent
  
Not Available
  
Mohs Hardness
6.5-7
  
5-6.5
  
Chemical Composition
SiO2
  
SiO 2 · nH 2OGemdat.org , Management Team (2012)
  
Carnelian and Precious Opal Chemical Formula
While comparing Carnelian and Precious 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 Carnelian and Precious Opal chemical formula.
- Chemical formula of Carnelian- SiO2
- Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
Carnelian and Precious Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carnelian and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.