Villiaumite and Black Opal Physical Properties

Villiaumite and Black Opal Chemical Formula

While comparing Villiaumite and Black Opal 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 Villiaumite and Black Opal chemical formula.

• Chemical formula of Villiaumite- NaFUlrich Henn and Claudio C.
• Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Villiaumite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Villiaumite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Villiaumite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Villiaumite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.