An emerald and diamond dress ring, by Grima, 1970 The oval cabochon emerald, within a 'wave' surround of brilliant-cut diamonds, to a textured 18 carat gold mount, signed Grima, maker's mark HJCo., UK hallmark, ring size O-P A ring of this design was exhibited as part of the 1991 'Grima Retrospective' exhibition at Goldsmiths Hall, London.  For a recent similar example see Bonhams 'Fine Jewellery', London, 5th December 2018, lot 115.