Zoisite and Realgar Physical Properties

Zoisite and Realgar Chemical Formula

While comparing Zoisite and Realgar 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 Zoisite and Realgar chemical formula.

• Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
• Chemical formula of Realgar- AsSMichael O’Donoghue , Gems, Sixth Edition (2006)

Zoisite and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.56 whereas that of Realgar is 3.56.