Emerald and Foitite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
2.67-2.78
  
3.17
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Handbook of mineralogy (2001)
  
Cleavage
Imperfect on the [0001]
  
None
  
Mohs Hardness
7.5-8
  
7
  
Chemical Composition
Be3Al2SiO6
  
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Emerald and Foitite Chemical Formula
While comparing Emerald and Foitite 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 Foitite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Emerald and Foitite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Foitite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Foitite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.17 whereas that of Foitite is 3.17.
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