AN ANTIQUE EMERALD AND DIAMOND CONVERTIBLE NECKLACE, 19TH CENTURY in yellow gold and silver, the central section detachable to wear as a brooch or pendant, of openwork design, set throughout with step cut emeralds and rose cut diamonds, the necklace formed of rows of foliate links, similarly jewelled with emeralds and diamonds, no assay marks, brooch / pendant 9.1cm, necklace 42.5cm, 107.3g.