Galena and Chrysoprase Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.23
  
2.58-2.64
  
Fracture
Subconchoidal, Brittle, Metallic
  
Gems, Sixth Edition (2006)
  
Cleavage
Cubic perfect on [001], parting on [111]
  
None
  
Mohs Hardness
2.5-2.75
  
6.5-7
  
Chemical Composition
PbS
  
SiO2 (with a high level of nickel impurities )
  
Galena and Chrysoprase Chemical Formula
While comparing Galena and Chrysoprase 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 Galena and Chrysoprase chemical formula.
- Chemical formula of Galena- PbS
- Chemical formula of Chrysoprase- SiO2 (with a high level of nickel impurities )
Galena and Chrysoprase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Galena and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Galena is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.