Carletonite and Iolite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.45
  
2.6-2.7
  
Fracture
Conchoidal, Conchoidal, Brittle
  
Not Available
  
Cleavage
Perfect on {001}, good on {110}
  
3,1
  
Mohs Hardness
4-4.5
  
7-7.5
  
Chemical Composition
KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Mg2Al4Si5O18
  
Carletonite and Iolite Chemical Formula
While comparing Carletonite 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 Carletonite and Iolite chemical formula.
- Chemical formula of Carletonite- KNa 4Ca 4Si 8O 18(CO 3) 4(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Iolite- Mg2Al4Si5O18
Carletonite and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carletonite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carletonite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Carletonite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.