Amethyst and Andean Opal Physical Properties

Amethyst and Andean Opal Chemical Formula

While comparing Amethyst and Andean 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 Amethyst and Andean Opal chemical formula.

• Chemical formula of Amethyst- SiO₂
• Chemical formula of Andean Opal- SiO2·nH2O

Amethyst and Andean Opal Specific Gravity

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