Star Sapphire and Norbergite Physical Properties

Star Sapphire and Norbergite Chemical Formula

While comparing Star Sapphire and Norbergite 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 Norbergite chemical formula.

• Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
• Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Star Sapphire and Norbergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Sapphire and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.177 whereas that of Norbergite is 3.177.