Emerald and Galena Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
2.67-2.78
  
6.23
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Subconchoidal, Brittle, Metallic
  
Cleavage
Imperfect on the [0001]
  
Cubic perfect on [001], parting on [111]
  
Mohs Hardness
7.5-8
  
2.5-2.75
  
Chemical Composition
Be3Al2SiO6
  
PbS
  
Emerald and Galena Chemical Formula
While comparing Emerald and Galena 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 Emerald and Galena chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Galena- PbS
Emerald and Galena Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Galena Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Galena Optical Properties during the identification of gemstone. Specific gravity of Emerald is 6.23 whereas that of Galena is 6.23.
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