Agate Opal and Polyhalite Physical Properties

Agate Opal and Polyhalite Chemical Formula

While comparing Agate Opal and Polyhalite 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 Agate Opal and Polyhalite chemical formula.

• Chemical formula of Agate Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
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Agate Opal and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agate Opal and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agate Opal and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Agate Opal is 2.78 whereas that of Polyhalite is 2.78.