Genuine fire opal ring on an engraved sterling silver band, black oxidized. Wonderful as an organic opal engagement ring, a special gift for a beloved person in your life or just to keep for yourself. A truly unique gift for your 12th and 14th wedding anniversary. Opal is an October birthstone. The gemstone is a genuine fire opal from Mexico, untreated and all natural. It is safely set in a closed bezel setting that protects the stone. Unique gemstone with a red-orange opal area. Green, blue and yellow rolling flash of colors (best seen in direct sunlight). The ring band is 3.5mm wide and has a swirl pattern engraved. Dark oxidized and stamped with .925 hallmark. You will receive the very same ring shown in the photos, in an elegant jewelry box ready to be given as a gift. Please note that the very dark oxidation will wear lighter over time, but can be easily restored at home.