Opal and Rossmanite Physical Properties

Opal and Rossmanite Chemical Formula

While comparing Opal and Rossmanite 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 Opal and Rossmanite chemical formula.

• Chemical formula of Opal- SiO₂ · nH₂O
• Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Opal and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3 whereas that of Rossmanite is 3.