Star Ruby and Hardystonite Physical Properties

Star Ruby and Hardystonite Chemical Formula

While comparing Star Ruby and Hardystonite 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 Hardystonite chemical formula.

• Chemical formula of Star Ruby- Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Star Ruby and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.