the necklace by Charles Greig, Cape Town, composed of three rows of cultured pearls, measuring approximately 4.50mm, collet-set with oval-cut yellow sapphires, enclosed by a border of eight- and round brilliant-cut millegrain-set diamonds, the largest central plaque with a pearl and diamond drop, to a conforming clasp, the diamonds weighing approximately 8.00 carats, length approximately 448mm; a pair of earrings by Crivelli, Valenza, Italy, tube-set with a cushion-shaped yellow sapphire, with a detachable pearl and diamond drop, total diamond weight approximately 2.50 to 2.80 carats, post and clip fittings, length approximately 37mm; and a ring of similar design, size M½