Foitite and Sugilite Physical Properties

Foitite and Sugilite Chemical Formula

While comparing Foitite 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 Foitite and Sugilite chemical formula.

• Chemical formula of Foitite- Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Foitite and Sugilite Specific Gravity

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