Retro & New Pandora 14ct Gold and Black Onyx Droplet Earring Pendnats USA Cheap On Sale. Complete Collection In Stock! Celebrate special occasions with Pandora Jewelry. Buy Now>> The black onyx on these earrings is stunning! Made from 14ct gold. Black Onyx is subject to a dye treatment which may not be permanent. Gently clean by rinsing in warm water and drying with a soft cloth.