Hardystonite and Star Ruby Physical Properties

Hardystonite and Star Ruby Chemical Formula

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

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

Hardystonite and Star Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.