Selenite and Spinel Physical Properties

Selenite and Spinel Chemical Formula

While comparing Selenite and Spinel 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 Selenite and Spinel chemical formula.

• Chemical formula of Selenite- CaSO4·2H2O
• Chemical formula of Spinel- MgAl₂O₄

Selenite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Selenite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Selenite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Selenite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.