Sapphire and Chalcedony Physical Properties

Sapphire and Chalcedony Chemical Formula

While comparing Sapphire and Chalcedony 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 Sapphire and Chalcedony chemical formula.

• Chemical formula of Sapphire- Al ₂ O ₃
• Chemical formula of Chalcedony- SiO₂

Sapphire and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.