Pezzottaite and Onyx Physical Properties

Pezzottaite and Onyx Chemical Formula

While comparing Pezzottaite 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 Pezzottaite and Onyx chemical formula.

• Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.
• Chemical formula of Onyx- SiO₂

Pezzottaite and Onyx Specific Gravity

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