Emerald and Rubellite Physical Properties

Emerald and Rubellite Chemical Formula

While comparing Emerald and Rubellite 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 Emerald and Rubellite chemical formula.

• Chemical formula of Emerald- Be₃Al₂SiO₆
• Chemical formula of Rubellite- 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.

Emerald and Rubellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Rubellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Rubellite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.01-3.06 whereas that of Rubellite is 3.01-3.06.