18ct gold, tourmaline and diamond brooch/pendant, Haller Jewellery Company for Grima, circa 1968. Of abstract design, composed of overlapping rectangles of textured gold supporting an unpolished green and pink tourmaline crystal and accented by a claw-set brilliant-cut diamond, completed by a later curb chain, brooch/pendant approximately 58 x 34 mm, signed Grima, maker's mark HJCo for Haller Jewellery Company, hallmarks for London 1968, chain length approximately 600 mm, marked Italy, brooch pin white gold.