Afghanite and Gypsum Physical Properties

Afghanite and Gypsum Chemical Formula

While comparing Afghanite and Gypsum 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 Afghanite and Gypsum chemical formula.

• Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
• Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Afghanite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.