Crystal Opal and Poldervaartite Physical Properties

Crystal Opal and Poldervaartite Chemical Formula

While comparing Crystal Opal and Poldervaartite 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 Crystal Opal and Poldervaartite chemical formula.

• Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
• Chemical formula of Poldervaartite- (Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)

Crystal Opal and Poldervaartite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Poldervaartite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Poldervaartite Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 2.91 whereas that of Poldervaartite is 2.91.