Oval Opal Dual Ring | Size NDisplaying the most invigorating tones with dreamy blues, greens and purple this 2. 50ct Lightning Ridge Opal ring glows from every angle. Set in a contemporary east west orientation on a dual ring band made from Argentium silver, which is hypoallergenic, tarnish resistant and brighter in colour than traditional sterling silver. Ready to ship in UK ring size N and hallmarked by The London Assay Office. Please get in touch if you'd like to see a short