Kay Jewelers Fire Opal Ring Diamond Accents Sterling Silver : Romantically vintage, strikingly fresh, this ring for her showcases an oval natural fire opal flanked by trios of diamond accents set in sterling silver. Most natural gemstones pictured have been subject to an enhancement process or treatment (e.g. heating, oiling, diffusion, waxing, etc.), which may not be permanent and may require special care. Please refer to the FAQ section below for more information about gemstone enhancements and special care recommendations.