Beryl and Topaz Physical Properties

Beryl and Topaz Chemical Formula

While comparing Beryl and 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 Beryl and Topaz chemical formula.

• Chemical formula of Beryl- Be₃Al₂Si₆O₁₈
• Chemical formula of Topaz- Al₂SiO₄(F,OH)₂

Beryl and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Beryl and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Beryl and Topaz Optical Properties during the identification of gemstone. Specific gravity of Beryl is 3.49-3.57 whereas that of Topaz is 3.49-3.57.