Andean Opal and Afghanite Physical Properties

Andean Opal and Afghanite Chemical Formula

While comparing Andean Opal and Afghanite 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 Afghanite chemical formula.

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• Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Andean Opal and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andean Opal and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andean Opal and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Andean Opal is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.