Tanzanite and Dravite Physical Properties

Tanzanite and Dravite Chemical Formula

While comparing Tanzanite and Dravite 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 Tanzanite and Dravite chemical formula.

• Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
• Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Tanzanite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.