Watermelon Tourmaline and Alexandrite Physical Properties

Watermelon Tourmaline and Alexandrite Chemical Formula

While comparing Watermelon Tourmaline and Alexandrite 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 Watermelon Tourmaline and Alexandrite chemical formula.

• Chemical formula of Watermelon 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.
• Chemical formula of Alexandrite- BeAl ₂ O ₄

Watermelon Tourmaline and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Watermelon Tourmaline and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Watermelon Tourmaline and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Watermelon Tourmaline is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.