Delfina Delettrez 18K Three Dots Ring with Aquamarine and Pink Tourmalines. Handmade in Italy, this piece from Delfina Delettrez\'s 360 collection creates a delicate balance between two small pink tourmalines (0.36ct) with one larger aquamarine (1.11ct), sitting on the finger as if unsupported by the slim 18kt white gold double band.