Powellite and Opal Physical Properties

Powellite and Opal Chemical Formula

While comparing Powellite and 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 Powellite and Opal chemical formula.

• Chemical formula of Powellite- CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Opal- SiO₂ · nH₂O

Powellite and Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Powellite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Powellite and Opal Optical Properties during the identification of gemstone. Specific gravity of Powellite is 1.98-2.25 whereas that of Opal is 1.98-2.25.