Blue John and Cancrinite Physical Properties

Blue John and Cancrinite Chemical Formula

While comparing Blue John and Cancrinite 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 Cancrinite chemical formula.

• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Cancrinite- Na 2Ca 2Al 6Si 6O 24(CO 3) 2Walter Schumann , Gemstones of the world (2001) More from other references

Blue John and Cancrinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Cancrinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Cancrinite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 2.42-2.52 whereas that of Cancrinite is 2.42-2.52.