Heliotrope and Alunite Physical Properties

Heliotrope and Alunite Chemical Formula

While comparing Heliotrope and Alunite 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 Heliotrope and Alunite chemical formula.

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• Chemical formula of Alunite- KAl3(SO4)2(OH)6

Heliotrope and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Heliotrope and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Heliotrope and Alunite Optical Properties during the identification of gemstone. Specific gravity of Heliotrope is 2.6-2.9 whereas that of Alunite is 2.6-2.9.