Opal Mid-Century Convertible Ring 18k Yellow GoldThis Mid Century opal and diamond cocktail ring is finished in 18 karat yellow gold and is truly something special. The ring is so special because it is actually capable of converting into a pendant through a simple process of folding hooks on the underside of the gemstones. However you decide to wear it, the design is absolutely beautiful, with a wreath of filigree wire work holding 1. 28 carats of accent diamonds. The large opal is enchanting with