While comparing Emerald and Atacamite 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 Atacamite chemical formula.
Another important criteria for qualitative analysis of gemstones is Emerald and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.
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