Iolite and Turquoise Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.6-2.7
  
2.30-2.90
  
Fracture
Not Available
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
3,1
  
Good to perfect_usually N/A
  
Mohs Hardness
7-7.5
  
5-6
  
Chemical Composition
Mg2Al4Si5O18
  
CuAl6(PO4)4(OH)8 • 4H2O
  
Iolite and Turquoise Chemical Formula
While comparing Iolite and Turquoise 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 Turquoise chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Turquoise- CuAl6(PO4)4(OH)8 • 4H2O
Iolite and Turquoise Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.