Galena and White Opal Physical Properties

Galena and White Opal Chemical Formula

While comparing Galena and White 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 Galena and White Opal chemical formula.

• Chemical formula of Galena- PbS
• Chemical formula of White Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Galena and White Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Galena and White Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and White Opal Optical Properties during the identification of gemstone. Specific gravity of Galena is 1.98-2.50 whereas that of White Opal is 1.98-2.50.