Dravite and Omphacite Physical Properties

Dravite and Omphacite Chemical Formula

While comparing Dravite and Omphacite 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 Dravite and Omphacite chemical formula.

• Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
• Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

Dravite and Omphacite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.