Plumbogummite and Onyx Physical Properties

Plumbogummite and Onyx Chemical Formula

While comparing Plumbogummite and Onyx 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 Plumbogummite and Onyx chemical formula.

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• Chemical formula of Onyx- SiO₂

Plumbogummite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.