Edenite and Onyx Physical Properties

Edenite and Onyx Chemical Formula

While comparing Edenite and Onyx 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 Edenite and Onyx chemical formula.

• Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
• Chemical formula of Onyx- SiO₂

Edenite and Onyx Specific Gravity

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