Single gold ring with the most beautiful green Tourmaline. The grinding highlights the stone's beauty and clarity. 18K gold, Diamond and Tourmaline. Nord Green-Ringen is made in 18K gold set with the finest 0.35ct baguette-cut green Tourmaline as well as their calm signature diamond. Brill.0.003ct TW.VS. The socket measures 7x4mm. This ring is also found in 18K white gold.