TOURMALINE MEDIUM GREEN 3.33 CTS – NATURAL SRI LANKA GEMSTONE 14823

100% Natural – Not treated in any way.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Gem with High Luster and Good Clarity.
Large Sizes are Extremely Rare.
A Gem of Lasting Beauty.
Tourmaline Color-change – A unique color miracle displaying a Mix of Red,
Yellow, Gold and Green – Rare type of Tourmaline.

RI:1.624(+.005,-.005)-1.644(+.006,-.006)
Hardness: 7-7.5
CC:(NaCa) (LI,MgFe,Al)9B3Si6(O,OH)31
Density: 3.06 (.05, +.15)
Crystal Group: Hexagonal

Tourmaline occurs in all colors, but red, green
and multicolored are the most popular gems.
The name Tourmaline comes from the Singhalese
(Sri Lankan) words’tura mali’.Gem with in a multitude
of colors, some have two or more colors,
some even color-changing, and also a rare variety- the Cats-eye.
Tourmalines will often display several colors and its main
feature is its marked dichroism. Green Tourmaline is very popular.