A diamond and cultured pearl ring, by Macdonald of Johannesburg, 1970s, the bezel formed of a cluster of overlapping tear-drop-shaped polished and textured panels, centred with three claw set brilliant-cut diamonds, and accented with three cultured pearls each inset with a small diamond, to an angular shank, mounted in yellow and white precious metal, stamped ‘750’, ring size approximately S. £1,000-£1,200