Incredible Kaleidoscope of Color Black Opal and Diamond Halo Ring

18K yellow gold and platinum with Oval Black Opal of iridescent shades of fiery red, neon green, orange and night sky blue color measuring 17mm x 10.5mm x 5.5mm, 5.45 cttw, with 24 round Diamonds FG/ VS 0.61 cttw, set in a Fingermate Shank mounting, size 4.5