Onyx and Carnallite Physical Properties

Onyx and Carnallite Chemical Formula

While comparing Onyx and Carnallite 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 Onyx and Carnallite chemical formula.

• Chemical formula of Onyx- SiO₂
• Chemical formula of Carnallite- KMgCl3•6(H2O)

Onyx and Carnallite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Carnallite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Carnallite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 1.6 whereas that of Carnallite is 1.6.