This 16'' Natural Ethiopian Opal Wello Fire Opal Gemstone Bead Necklace features round, green Fire Opal beads with a very good cut grade and opalescence effect. The necklace is made with polished beads ranging in depth from 3 to 5.5 MM, with a total carat weight of 36 carats. The brand, Afreena Gems, sources the gemstones from Ethiopia and India, making it a unique and wholesale piece of jewelry for those seeking natural, high-quality gemstones.