Year: 2019 This is an authentic IRENE NEUWIRTH 18K Yellow Gold Fire Opal Infinity Cocktail Ring 53 6.25. The ring is crafted of 18 karat yellow gold and features a prong-set fire opal. Follow this item for alerts. Irene Neuwirth is a registered trademark of Irene Neuwirth. FASHIONPHILE is not affiliated with Irene Neuwirth.