Polyhalite and Realgar Physical Properties

Polyhalite and Realgar Chemical Formula

While comparing Polyhalite 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 Polyhalite and Realgar chemical formula.

• Chemical formula of Polyhalite- K2Ca2Mg(SO4)4·2H2O
• Chemical formula of Realgar- AsSMichael O’Donoghue , Gems, Sixth Edition (2006)

Polyhalite and Realgar Specific Gravity

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