Vivianite and Harlequin Opal Physical Properties

Vivianite and Harlequin Opal Chemical Formula

While comparing Vivianite 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 Vivianite and Harlequin Opal chemical formula.

• Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
• Chemical formula of Harlequin Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Vivianite and Harlequin Opal Specific Gravity

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