Agate and Alexandrite Physical Properties

Agate and Alexandrite Chemical Formula

While comparing Agate 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 Agate and Alexandrite chemical formula.

• Chemical formula of Agate- SiO₂
• Chemical formula of Alexandrite- BeAl ₂ O ₄

Agate and Alexandrite Specific Gravity

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