Chiastolite and Blue John Physical Properties

Chiastolite and Blue John Chemical Formula

While comparing Chiastolite 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 Chiastolite and Blue John chemical formula.

• Chemical formula of Chiastolite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth edition (2006)
• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Chiastolite and Blue John Specific Gravity

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