Sillimanite and Serendibite Physical Properties

Sillimanite and Serendibite Chemical Formula

While comparing Sillimanite and Serendibite 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 Serendibite chemical formula.

• Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Serendibite- Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Serendibite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Serendibite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Serendibite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.43-3.44 whereas that of Serendibite is 3.43-3.44.