Opal and Zircon Physical Properties

Opal and Zircon Chemical Formula

While comparing Opal and Zircon 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 Opal and Zircon chemical formula.

• Chemical formula of Opal- SiO₂ · nH₂O
• Chemical formula of Zircon- ZrSiO₄

Opal and Zircon Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Zircon Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Zircon Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.93-4.73 whereas that of Zircon is 3.93-4.73.