Iolite and Watermelon Tourmaline Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.6-2.7
  
2.90-3.40
  
Fracture
Not Available
  
Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
  
Cleavage
3,1
  
Not Available
  
Mohs Hardness
7-7.5
  
7-7.5
  
Chemical Composition
Mg2Al4Si5O18
  
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  
Iolite and Watermelon Tourmaline Chemical Formula
While comparing Iolite and Watermelon Tourmaline 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 Watermelon Tourmaline chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Watermelon Tourmaline- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Iolite and Watermelon Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Watermelon Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Watermelon Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.90-3.40 whereas that of Watermelon Tourmaline is 2.90-3.40.