Precious coral and Alexandrite Physical Properties

Precious coral and Alexandrite Chemical Formula

While comparing Precious coral and Alexandrite 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 Precious coral and Alexandrite chemical formula.

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• Chemical formula of Alexandrite- BeAl ₂ O ₄

Precious coral and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious coral and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious coral and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Precious coral is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.