Williamsite and Iolite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.51-2.63
  
2.6-2.7
  
Fracture
Conchoidal, Conchoidal, Handbook of mineralogy (2001)
  
Not Available
  
Cleavage
Not Available
  
3,1
  
Mohs Hardness
4
  
7-7.5
  
Chemical Composition
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
  
Mg2Al4Si5O18
  
Williamsite and Iolite Chemical Formula
While comparing Williamsite and Iolite 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 Williamsite and Iolite chemical formula.
- Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Iolite- Mg2Al4Si5O18
Williamsite and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Williamsite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Williamsite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Williamsite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.