A BELLE ÉPOQUE DIAMOND PENDANT NECKLACE, CIRCA 1910 The openwork plaque of foliate design, millegrain-set throughout with old brilliant and single-cut diamonds, centring an old marquise-shaped diamond weighing approximately 0.80ct, on a similarly set bow surmount, suspending from a later cable-link chain, remaining diamonds approximately 1.50ct total, pendant length 5.4cm, chain length 43.1cm