A DIAMOND CLIP BROOCH, BY MARC Designed as a series of pavé-set and baguette-cut diamond ribbons gathered by a circular-cut diamond cluster, circa 1955, with French assay marks Signed Marc, Paris, no. 299
AN EARLY 20TH CENTURY DIAMOND BROOCH. The openwork fan-like surmount with old-cut diamond collet highlights within a millegrain-set rose-cut diamond frame, suspending an articulated similarly-set trellis like panel with diamond single-stone drop terminations, circa 1915, 9.8cm long
Sapphire and diamond "Convolvolo" brooch, Michele Della Valle. Designed as a flowering branch of convolvulus, set with circular-cut sapphires and brilliant-cut diamonds, mounted in white gold and titanium, signed Michele della Valle and numbered, Italian assay and maker's marks.
GEM SET AND DIAMOND CLIP, CARTIER, 1930S. Suspending fringes of barrel-shaped carved emeralds, ruby beads, seed pearls, single-, circular- and brilliant-cut diamonds, enhanced with black enamel, signed Cartier Paris and numbered, French assay and maker's marks