Sillimanite and Hyalite Physical Properties

Sillimanite and Hyalite Chemical Formula

While comparing Sillimanite and Hyalite 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 Hyalite chemical formula.

• Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Hyalite- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Sillimanite and Hyalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Hyalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Hyalite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is Not Available whereas that of Hyalite is Not Available.