Falcons Eye and Blue John Physical Properties

Falcons Eye and Blue John Chemical Formula

While comparing Falcons Eye and Blue John 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 Blue John chemical formula.

• Chemical formula of Falcons Eye- SiO 2Walter Schumann , Gemstones of the world (2001)
• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Falcons Eye and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Falcons Eye and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Falcons Eye and Blue John Optical Properties during the identification of gemstone. Specific gravity of Falcons Eye is 3.00-3.25 whereas that of Blue John is 3.00-3.25.