Andean Opal and Dravite Physical Properties

Andean Opal and Dravite Chemical Formula

While comparing Andean Opal and Dravite 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 Andean Opal and Dravite chemical formula.

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• Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Andean Opal and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andean Opal and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andean Opal and Dravite Optical Properties during the identification of gemstone. Specific gravity of Andean Opal is 3.03-3.18 whereas that of Dravite is 3.03-3.18.