Nephrite and Indicolite Blue Tourmaline Physical Properties

Nephrite and Indicolite Blue Tourmaline Chemical Formula

While comparing Nephrite and Indicolite Blue Tourmaline 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 Nephrite and Indicolite Blue Tourmaline chemical formula.

• Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
• Chemical formula of Indicolite Blue Tourmaline- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Nephrite and Indicolite Blue Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Indicolite Blue Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Indicolite Blue Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 3.05-3.11 whereas that of Indicolite Blue Tourmaline is 3.05-3.11.