centrally decorated with a pendant featuring an oval cabochon sapphire weighing approximately 16.00 carats, amid a tiered octagonal surround and graduated baton surmounts of tapered baguette-cut and round diamonds, on a triple strand of cultured pearls and gold rondelles, to a fluted diamond bar clasp, altogether the diamonds weighing approximately 9.90 carats, in 18 karat gold, length 15 inches