Dravite and Sapphire Physical Properties

Dravite and Sapphire Chemical Formula

While comparing Dravite and Sapphire 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 Sapphire 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 Sapphire- Al ₂ O ₃

Dravite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.