To say this is simply green tourmaline would be misleading. The color is somewhere between crisp emerald green + dark indigo blue. The stone is set in solid 22K yellow gold. I’ve had this single tourmaline for years, so I just made one! A true one of a kind piece. 
Comes with a deluxe 14K and silicone backing. 

22K Greenish Blue Tourmaline Stud <1pc>

6 x 6mm trillion shaped stone

Stone from Brazil

Made in Los Angeles, CA