Verdelite and Gahnite Physical Properties

Verdelite and Gahnite Chemical Formula

While comparing Verdelite and Gahnite 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 Verdelite and Gahnite chemical formula.

• Chemical formula of Verdelite- 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.
• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Verdelite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdelite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdelite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Verdelite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.