Precious Opal and Moldavite Physical Properties

Precious Opal and Moldavite Chemical Formula

While comparing Precious Opal and Moldavite 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 Precious Opal and Moldavite chemical formula.

• Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
• Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Precious Opal and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Precious Opal and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious Opal and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Precious Opal is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.