Emerald and Harlequin Opal Physical Properties

Emerald and Harlequin Opal Chemical Formula

While comparing Emerald and Harlequin 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 Emerald and Harlequin Opal chemical formula.

• Chemical formula of Emerald- Be₃Al₂SiO₆
• Chemical formula of Harlequin Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Emerald and Harlequin Opal Specific Gravity

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