Star Sapphire and Hardystonite Physical Properties

Star Sapphire and Hardystonite Chemical Formula

While comparing Star Sapphire 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 Sapphire and Hardystonite chemical formula.

• Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
• Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Star Sapphire and Hardystonite Specific Gravity

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