Chrome-Chalcedony and Achroite Physical Properties

Chrome-Chalcedony and Achroite Chemical Formula

While comparing Chrome-Chalcedony and Achroite 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 Achroite chemical formula.

• Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
• Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Chrome-Chalcedony and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrome-Chalcedony and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome-Chalcedony and Achroite Optical Properties during the identification of gemstone. Specific gravity of Chrome-Chalcedony is 2.90-3.40 whereas that of Achroite is 2.90-3.40.