Erythrite and Precious Opal Physical Properties

Erythrite and Precious Opal Chemical Formula

While comparing Erythrite and Precious 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 Erythrite and Precious Opal chemical formula.

• Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
• Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

Erythrite and Precious Opal Specific Gravity

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