This is an Ethiopian opal ring. I polished the stone myself from a raw opal, aiming to bring out as much play-of-color as possible. The ring setting and ring arm have a fluid, unconventional design that complements the natural shape of the stone. Size: 11 to 11.5 (Japanese size) Materials: silver925, natural opal *Rhodium coating is applied for long-lasting shine and requires no polishing.