Falcons Eye and Neptunite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.58-2.64
  
3.19-3.23
  
Fracture
Gemstones of the world (2001)
  
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Cleavage
Not Available
  
{110} good
  
Mohs Hardness
7
  
5-6
  
Chemical Composition
SiO 2Walter Schumann , Gemstones of the world (2001)
  
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Falcons Eye and Neptunite Chemical Formula
While comparing Falcons Eye and Neptunite 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 Falcons Eye and Neptunite chemical formula.
- Chemical formula of Falcons Eye- SiO 2Walter Schumann , Gemstones of the world (2001)
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Falcons Eye and Neptunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Falcons Eye and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Falcons Eye and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Falcons Eye is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.