Nacre and Melanite Physical Properties

Nacre and Melanite Chemical Formula

While comparing Nacre and Melanite 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 Nacre and Melanite chemical formula.

• Chemical formula of Nacre- CaCO3
• Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Nacre and Melanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nacre and Melanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nacre and Melanite Optical Properties during the identification of gemstone. Specific gravity of Nacre is 3.70-4.10 whereas that of Melanite is 3.70-4.10.