A pearl, ruby and diamond necklace

The multiple strands of seed pearls, featuring oval spacers set throughout with rose-cut diamonds, to an openwork floral pendant set with old brilliant, rose-cut and cushion-shaped diamonds, suspending a calibré-cut ruby and oval-cut diamond drop, old brilliant, oval-cut and cushion-shaped diamonds approx. 2.60 carats total, composite with mostly 19th century elements, two rubies deficient, pearls untested, length of shortest strand 36.1cm