This enchanting ring is centered with one (1) oval cabochon cut natural crystal opal set into a sixteen-prong setting. The opal is bordered with sixteen (16) prong set, round brilliant cut diamonds. The ring measures 20.0mm at the top, rises 8.3mm above the finger, tapering to 1.7mm wide and 1.6mm thick at the base of the shank. It is currently a size 6.5. The opal is lightly chipped and crazed, please review photos.