No reserve - a group of six necklaces

No reserve - a group of six necklaces, comprising: a cord necklace suspending a pendant set with a coin within a border of polished lapis lazuli, the bail set with chevrons of brilliant-cut diamonds, mounted in gold, length 34cm, Italian maker's mark, stamped 750; a bead necklace composed of sodalite beads spaced by gold rondelles, length 42cm, British hallmarks for 18ct gold; a bead necklace composed of lace agate, pink and white hardstone beads and cultured pearls, mounted in gold, length 42.5cm, stamped 750; a cultured pearl, synthetic ruby, simulant diamond and dyed quartz necklace, length 42.5cm; a necklace composed of tumbled emerald beads and cultured pearls, mounted in gold, length 43.5cm; a cultured pearl and lasqué diamond bead necklace, length 43cm; and a four-row onyx bead choker centring on a stylised white gold 'A' motif pavé-set with brilliant-cut diamonds, length 32cm