Ippolita 18KT Gold Rock Candy Medium Round Triplet Amethyst Stud Earrings. A truly unique color is achieved on this faceted stud earrings. Made of 18K gold, each contains a triplet stone: the upper layer is composed of dark amethyst, while beneath it, mother-of-pearl shines above African amethyst. The result is a captivating combination of intense purple tempered by a soft opalescence. Wear them solo or as part of an ear-climbing stack.