Poudretteite and Gahnite Physical Properties

Poudretteite and Gahnite Chemical Formula

While comparing Poudretteite 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 Poudretteite and Gahnite chemical formula.

• Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Poudretteite and Gahnite Specific Gravity

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