Sellaite and Afghanite Physical Properties

Sellaite and Afghanite Chemical Formula

While comparing Sellaite and Afghanite 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 Sellaite and Afghanite chemical formula.

• Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
• Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Sellaite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sellaite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sellaite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Sellaite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.