18ct white gold, emerald, diamond and onyx pendant necklace, the octagonal pendant centring a claw-set emerald-cut emerald framed by a border of pave-set brilliant-cut diamonds and bezel-set black onyx plaques, to an open work chain of alternating octagonal and hexagonal links, those to the front embellished with brilliant-cut diamonds, completed by a concealed clasp, the emerald and diamonds together weighing approximately 9.41 and 3.69 carats respectively, pendant length approximately 40 mm, chain circumference approximately 420 mm.