Star Ruby and Staurolite Physical Properties

Star Ruby and Staurolite Chemical Formula

While comparing Star Ruby and Staurolite 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 Star Ruby and Staurolite chemical formula.

• Chemical formula of Star Ruby- Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

Star Ruby and Staurolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.