Hardystonite and Allanite Physical Properties

Hardystonite and Allanite Chemical Formula

While comparing Hardystonite and Allanite 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 Allanite chemical formula.

• Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
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Hardystonite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.