No reserve - René Boivin, a cultured pearl and pink tourmaline necklace

No reserve - René Boivin, a cultured pearl and pink tourmaline necklace, composed of seven strands of cultured pearls fastened by an adjustable clasp in blackened gold set with a cabochon pink tourmaline, suspending a loop of cultured pearls threaded through a bicoloured gold hoop, length adjustable, French assay marks for 18ct gold, French maker's marks Sté RB with snake for René Boivin