Obsidian and Elbaite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.35-2.60
  
2.90-3.10
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
  
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Cleavage
Not Available
  
Poor/indistinct on {1120} and {1011}
  
Mohs Hardness
5-5.5
  
7
  
Chemical Composition
Not Available
  
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
  
Obsidian and Elbaite Chemical Formula
While comparing Obsidian and Elbaite 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 Obsidian and Elbaite chemical formula.
>- Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Obsidian and Elbaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Obsidian and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.