Vivianite and Wood Opal Physical Properties

Vivianite and Wood Opal Chemical Formula

While comparing Vivianite and Wood 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 Wood Opal chemical formula.

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

Vivianite and Wood Opal Specific Gravity

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