Iolite and Emerald Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Hard
  
Specific Gravity
2.6-2.7
  
2.67-2.78
  
Fracture
Not Available
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
3,1
  
Imperfect on the [0001]
  
Mohs Hardness
7-7.5
  
7.5-8
  
Chemical Composition
Mg2Al4Si5O18
  
Be3Al2SiO6
  
Iolite and Emerald Chemical Formula
While comparing Iolite and Emerald 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 Iolite and Emerald chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Emerald- Be3Al2SiO6
Iolite and Emerald Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Emerald Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.67-2.78 whereas that of Emerald is 2.67-2.78.