Agate Opal and Chalcedony Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.50
  
2.55-2.70
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
  
Cleavage
Not Available
  
Absent
  
Mohs Hardness
5.5-6.5
  
6.5-7
  
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  
SiO2
  
Agate Opal and Chalcedony Chemical Formula
While comparing Agate Opal and Chalcedony 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 Agate Opal and Chalcedony chemical formula.
- Chemical formula of Agate Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Chalcedony- SiO2
Agate Opal and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Agate Opal and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate Opal and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Agate Opal is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.