Sillimanite and Fuchsite Physical Properties

Sillimanite and Fuchsite Chemical Formula

While comparing Sillimanite and Fuchsite 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 Sillimanite and Fuchsite chemical formula.

• Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Fuchsite- K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)

Sillimanite and Fuchsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Fuchsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Fuchsite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2.77-2.88 whereas that of Fuchsite is 2.77-2.88.