While comparing Emerald and Pumpellyite 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 Emerald and Pumpellyite chemical formula.
Another important criteria for qualitative analysis of gemstones is Emerald and Pumpellyite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Pumpellyite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.20-3.30 whereas that of Pumpellyite is 3.20-3.30.
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