Edenite and Gahnite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.05-3.37
  
4.00-4.62
  
Fracture
Conchoidal, Brittle, Conchoidal
  
Conchoidal, Uneven
  
Cleavage
Good on (110)
  
Indistinct parting on [111]
  
Mohs Hardness
5-6
  
7.5-8
  
Chemical Composition
NaCa2Mg5Si7AlO22(OH)2
  
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Edenite and Gahnite Chemical Formula
While comparing Edenite and Gahnite 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 Edenite and Gahnite chemical formula.
- Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Edenite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Edenite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Edenite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Edenite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.