Topaz and Nacre Physical Properties

Topaz and Nacre Chemical Formula

While comparing Topaz and Nacre 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 Topaz and Nacre chemical formula.

• Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
• Chemical formula of Nacre- CaCO3

Topaz and Nacre Specific Gravity

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