Williamsite and Alexandrite Physical Properties

Williamsite and Alexandrite Chemical Formula

While comparing Williamsite and Alexandrite 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 Alexandrite chemical formula.

• Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Alexandrite- BeAl ₂ O ₄

Williamsite and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Williamsite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Williamsite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Williamsite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.