Neptunite and London blue topaz Physical Properties

Neptunite and London blue topaz Chemical Formula

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

• Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)
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Neptunite and London blue topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Neptunite and London blue topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Neptunite and London blue topaz Optical Properties during the identification of gemstone. Specific gravity of Neptunite is Not Available whereas that of London blue topaz is Not Available.