Tourmaline Green Cushion 6.20ct EGLUSA Certificate

Beautiful modern cushion cut green tourmaline come with its own EGLUSA certificate.

VIDEO GREEN TOURMALINE

Certificate:…………EGLUSA
Chemical Formula:…….Al6(BO3)3Si6O18(OH)4
Shape, Cut:………….Cushion
Size:……………….13.29×10.17×6.23mm
Weight:……………..6.20ct
Color:………………Green
Hardness:……………7 – 7.5
Refractive Index:…….1.616 – 1.650
Transparency:………..Transparent
Double Refraction:…….018
Mineral Class:……….Tourmaline

Though Elbaite occurs in all color forms, the term Elbaite in the gemstone trade is sometimes used to describe the green form of Tourmaline. The other color forms of Elbaite have their own variety names on the gem market. Traditional Tourmaline gemstone variety names include Rubellite, the red or pink variety, Indicolite, the blue variety, and Watermelon Tourmaline, a multicolored Tourmaline of green and red. More recently coined Tourmaline variety names include Chrome Tourmaline and Paraiba Tourmaline. A recent trend in the gem market is to prefix Tourmaline gemstones by the color designation as opposed to variety name, such that “Rubellite” is now more often called “Red Tourmaline”.