Dravite and Angelite Physical Properties

Dravite and Angelite Chemical Formula

While comparing Dravite and Angelite 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 Angelite 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 Angelite- CaSO4·2H2O

Dravite and Angelite Specific Gravity

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