Williamsite and Gahnite Physical Properties

Williamsite and Gahnite Chemical Formula

While comparing Williamsite 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 Williamsite and Gahnite chemical formula.

• Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Williamsite and Gahnite Specific Gravity

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