Pietersite and Iolite Physical Properties

Pietersite and Iolite Chemical Formula

While comparing Pietersite and Iolite 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 Pietersite and Iolite chemical formula.

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• Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

Pietersite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pietersite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pietersite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Pietersite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.