Fayalite and Selenite Physical Properties

Fayalite and Selenite Chemical Formula

While comparing Fayalite and Selenite 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 Fayalite and Selenite chemical formula.

• Chemical formula of Fayalite- Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Selenite- CaSO4·2H2O

Fayalite and Selenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Selenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Selenite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is whereas that of Selenite is .