A late 19th century diamond suite of jewellery

A late 19th century diamond suite of jewellery, comprising an elaborate diamond necklace, pierced and millegrain-set with graduated old circular-cut diamonds in silver and gold, the central scallop-edged section suspending graduated articulated diamonds, the five principal diamonds weigh approximately 2.15cts, 1.50cts, 1.10cts, 1.50cts and 1.45cts, on tapered diamond panels and a diamond-set back chain set on knife-edge links, 40cm long, with a matching pair of diamond drop earrings, the upper diamond cluster suspends two articulated diamonds and a diamond quatrefoil in pierced silver and gold setting, 4.3cm long, case