Alexandrite and Allanite Physical Properties

Alexandrite and Allanite Chemical Formula

While comparing Alexandrite and Allanite 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 Alexandrite and Allanite chemical formula.

• Chemical formula of Alexandrite- BeAl ₂ O ₄
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Alexandrite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.