Dravite and Antigorite Physical Properties

Dravite and Antigorite Chemical Formula

While comparing Dravite and Antigorite 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 Antigorite 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 Antigorite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Dravite and Antigorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Antigorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Antigorite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.58-2.80 whereas that of Antigorite is 2.58-2.80.