Tugtupite and Iolite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.30-2.60
  
2.6-2.7
  
Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Not Available
  
Cleavage
{111} Imperfect
  
3,1
  
Mohs Hardness
5.5-6
  
7-7.5
  
Chemical Composition
Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Mg2Al4Si5O18
  
Tugtupite and Iolite Chemical Formula
While comparing Tugtupite 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 Tugtupite and Iolite chemical formula.
- Chemical formula of Tugtupite- Na 4AlBeSi 4O 12ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Iolite- Mg2Al4Si5O18
Tugtupite and Iolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tugtupite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tugtupite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Tugtupite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.