Charoite and Dravite Physical Properties

Charoite and Dravite Chemical Formula

While comparing Charoite 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 Charoite and Dravite chemical formula.

• Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
• Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Charoite and Dravite Specific Gravity

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