AN EARLY 19TH CENTURY NECKLACE AND EARRINGS EN SUITE, FRENCH, CIRCA 1840Designed as a series of graduated rose-cut colourless stone elements within foiled closed-back setting, suspending from a double gold trace-link chain to a square gold plaque clasp with floral engraved decoration, with a pair of earrings en suite set with rose-cut diamonds, mounted in silver and gold, French assay marks, maker's mark 'RG', necklace length 38cm, earrings length 1.5cm