Edenite and Obsidian Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.05-3.37
  
2.35-2.60
  
Fracture
Conchoidal, Brittle, Conchoidal
  
Conchoidal, ConchoidalWalter Schumann, Conchoidal
  
Cleavage
Good on (110)
  
Not Available
  
Mohs Hardness
5-6
  
5-5.5
  
Chemical Composition
NaCa2Mg5Si7AlO22(OH)2
  
Not Available
  
Edenite and Obsidian Chemical Formula
While comparing Edenite and Obsidian 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 Obsidian chemical formula.
- Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
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Edenite and Obsidian Specific Gravity
Another important criteria for qualitative analysis of gemstones is Edenite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Edenite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Edenite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.