Chrome-Chalcedony and Opal Physical Properties

Chrome-Chalcedony and Opal Chemical Formula

While comparing Chrome-Chalcedony 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 Chrome-Chalcedony and Opal chemical formula.

• Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
• Chemical formula of Opal- SiO₂ · nH₂O

Chrome-Chalcedony and Opal Specific Gravity

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