Ear stud in 10-karat gold set with cabochon cut Pink Opal and facet cut tourmaline. The ear stud is sold per piece. The ear stud belongs to The Bon-Bon Collection, a collection filled with beautiful natural gemstones inspired by colorful candies. It holds hallmark 417, meaning it contains 41,7% pure gold. Our jewellery in 10 karat gold is certified Conflict-Free, ensuring that the gold is not sourced in conflict areas.