Afghanite and Sugilite Physical Properties

Afghanite and Sugilite Chemical Formula

While comparing Afghanite and Sugilite 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 Sugilite 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 Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Afghanite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Afghanite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.