Andradite and Williamsite Physical Properties

Andradite and Williamsite Chemical Formula

While comparing Andradite and Williamsite 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 Andradite and Williamsite chemical formula.

• Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
• Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Andradite and Williamsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Williamsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Williamsite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.51-2.63 whereas that of Williamsite is 2.51-2.63.