A large ruby and diamond pendant necklace

A large ruby and diamond pendant necklace, the pendant centred with a carved ruby decorated with a floral motif, within an elaborate border of round brilliant-cut diamonds in white and yellow gold, the chain formed of alternating heart-shaped and scrolling links in white and yellow gold, all set with round brilliant cut diamonds, signed Prologo, stamped 750, gross weight 148g, pendant length 7cm, chain length 62cm