Two vintage gold opal and diamond rings, one in 18ct set with an oval cabochon opal (16 x 11 mm) to surround of 10 round brilliant cut diamonds totalling approx. 0.20ct, wt, and 9ct set with an oval cabochon opal (10 x 8 mm), cracked with 2 single cut shoulder diamonds in white gold, wt, sizes M & N.