Selenite and Matrix Opal Physical Properties

Selenite and Matrix Opal Chemical Formula

While comparing Selenite and Matrix Opal 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 Matrix Opal chemical formula.

• Chemical formula of Selenite- CaSO4·2H2O
• Chemical formula of Matrix Opal- SiO2·nH2O

Selenite and Matrix Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Selenite and Matrix Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Selenite and Matrix Opal Optical Properties during the identification of gemstone. Specific gravity of Selenite is 1.98-2.50 whereas that of Matrix Opal is 1.98-2.50.