Emerald and Spinel Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Hard
  
Not Available
  
Specific Gravity
2.67-2.78
  
3.64-3.66
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Imperfect on the [0001]
  
None, but may exhibit slight parting
  
Mohs Hardness
7.5-8
  
8
  
Chemical Composition
Be3Al2SiO6
  
MgAl2O4
  
Emerald and Spinel Chemical Formula
While comparing Emerald and Spinel 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 Spinel chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Spinel- MgAl2O4
Emerald and Spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Spinel Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.64-3.66 whereas that of Spinel is 3.64-3.66.
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