Pyrargyrite and Chalcedony Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.85
  
2.55-2.70
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle
  
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
  
Cleavage
Distinct on {10 1 1}, imperfect on {01 1 2}
  
Absent
  
Mohs Hardness
2.5-3
  
6.5-7
  
Chemical Composition
Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SiO2
  
Pyrargyrite and Chalcedony Chemical Formula
While comparing Pyrargyrite 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 Pyrargyrite and Chalcedony chemical formula.
- Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Chalcedony- SiO2
Pyrargyrite and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrargyrite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrargyrite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Pyrargyrite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.