Simpsonite and Blue John Physical Properties

Simpsonite and Blue John Chemical Formula

While comparing Simpsonite 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 Simpsonite and Blue John chemical formula.

• Chemical formula of Simpsonite- Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Simpsonite and Blue John Specific Gravity

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