London blue topaz and Nepouite Physical Properties

London blue topaz and Nepouite Chemical Formula

While comparing London blue topaz and Nepouite 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 London blue topaz and Nepouite chemical formula.

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London blue topaz and Nepouite Specific Gravity

Another important criteria for qualitative analysis of gemstones is London blue topaz and Nepouite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use London blue topaz and Nepouite Optical Properties during the identification of gemstone. Specific gravity of London blue topaz is 3.18-3.24 whereas that of Nepouite is 3.18-3.24.