Smoky Quartz and Sillimanite Physical Properties

Smoky Quartz and Sillimanite Chemical Formula

While comparing Smoky Quartz and Sillimanite 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 Smoky Quartz and Sillimanite chemical formula.

• Chemical formula of Smoky Quartz- SiO₂
• Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Smoky Quartz and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smoky Quartz and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smoky Quartz and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Smoky Quartz is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.