Blue John and Augelite Physical Properties

Blue John and Augelite Chemical Formula

While comparing Blue John and Augelite 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 Blue John and Augelite chemical formula.

• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)

Blue John and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Augelite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 2.70-2.75 whereas that of Augelite is 2.70-2.75.