An Art Deco emerald and diamond pendant

An Art Deco emerald and diamond pendant, of geometric design with foliate motif, pavé-set with circular-cut and triangular-shaped diamonds and calibre-cut emeralds, suspending from an openwork emerald and diamond-set upper section in platinum, on a fine-link platinum neck chain set with quatrefoils of diamonds and a square-shaped emerald in silver on gold, pendant 6.7cm high, chain 40cm long