An emerald and diamond necklace and earrings by H. Stern, the necklace converted from a bracelet and set to the front with a series of circular-cut emerald and brilliant-cut diamond clusters, with similarly-cut diamonds between, to later cable-link chain, the clasp en suite, the earrings of similar design and with foliate surmounts, both with maker’s mark and stamped ‘750’, necklace with French import marks, total diamond weight approximately 2.80 carats, necklace length 36.5cm, earring length 30mm. £1,500-£2,000