Emerald and Erythrite Physical Properties
Tenacity
Not Available
  
Sectile
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
2.67-2.78
  
3.06
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
  
Cleavage
Imperfect on the [0001]
  
Perfect on {010}; poor on {100} and { 1 02}.
  
Mohs Hardness
7.5-8
  
Not Available
  
Chemical Composition
Be3Al2SiO6
  
Co3(AsO4)2•8(H2O)
  
Emerald and Erythrite Chemical Formula
While comparing Emerald and Erythrite 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 Erythrite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Emerald and Erythrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.06 whereas that of Erythrite is 3.06.
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