18K 2 ct cabachon aqua ring, circa 1970’s

18K 2 ct cabachon aqua ring, circa 1970’s, stone measures 9.4mm x 11.8, mtg measures 12.2mm wide, tapers to 3.1mm, 8mm high, size now 7, can be sized to 8.  Some stone wear, eye clean.  Please specify size needed.