Fancy yellow diamond ring, Sterle, circa 1966. Set with a cut-cornered rectangular modified brilliant fancy yellow diamond weighing 23.95 carats, on a decorative mount of foliate design, set with circular- and single-cut diamonds, size 49, signed Sterlé, numbered.

Diamond bracelet, Sterle, circa 1967. Designed as a series of interwoven branches, the centre highlighted with circular-cut diamonds, inner circumference approximately 160mm, signed Sterlé, numbered, French assay and maker's marks.

Important coral and diamond brooch/pendant, Van Cleef & Arpels, circa 1970. The centre set with an oval cabochon coral, encircled with circular- and single-cut diamonds and oval and pear-shaped cabochon coral, signed Van Cleef & Arpels, numbered, makers' mark.

Pair of coral and diamond pendent ear clips, Van Cleef & Arpels, circa 1970. Each suspending a detachable pear-shaped pendant set with cabochon coral and circular-cut diamonds, the surmount similarly embellished, signed Van Cleef & Arpels, numbered, French assay and maker's marks.

Impressive sapphire and diamond clip, Cartier. The cushion-shaped sapphire weighing 32.37 carats, set within a surround of pear-shaped and brilliant-cut diamonds, signed Cartier, French assay and maker's marks.

Emerald and diamond brooch, 1960s. Of palmette design, the pear-shaped emerald within a radiating surround of marquise-shaped, circular-cut and baguette diamonds, French assay and partial maker's marks.

Emerald and diamond ring. The cabochon emerald weighing 12.75 carats, framed with marquise-shaped and circular-cut diamonds, the shoulders set with pairs of circular-cut diamonds

Important gold, gem set and diamond bracelet-watch, Bulgari, 1960s.Designed as a serpent decorated with translucent red enamel, the head and body decorated with pear-shaped and brilliant-cut diamonds, with cabochon emerald eyes, the mouth opening to reveal a circular dial, signed Bulgari, numbered, Italian assay marks, dial signed Piaget, mechanical movement, case stamped Bulgari.

Diamond brooch. Designed as a flower set with a brilliant-cut diamond weighing 4.10 carats, further set with similarly cut, baguette, kite- and lozenge-shaped diamonds, French assay and partial maker's marks, one small diamond deficient.

Natural pearl and diamond pendent necklace. Set with a button shaped natural pearl measuring approximately 13.75 x 13.80 x 9.67mm, suspending a pendant of scroll design millegrain-set with circular-, single-cut and rose diamonds, supporting three natural pearl drops measuring approximately 8.45 x 8.55 x 10.70mm, 10.25 x 10.35 x 16.30mm and 8.60 x 8.70 x 10.50mm, all of grey tint, from a later seed pearl chain, length approximately 460mm.

Fancy yellow diamond ring, 'Yellow Lily' from the 'Marie de Medicis' collection, Mellerio dits Meller

Ruby and diamond ring, 'Lily Ruby' from the 'Marie de Medicis' collection, Mellerio dits Meller

Diamond parure, Graff. Comprising: a necklace composed of a graduated series of cluster motifs set with brilliant-cut diamonds, connected by curb linking set with brilliant-cut diamonds of black tint, length approximately 390mm; a bracelet, length approximately 175mm; and a pair of ear clips, hinged back fittings; each signed Graff, case stamped Graff.

Fancy yellow diamond and diamond necklace, Graff. The heart shaped pendant set with a square modified brilliant-cut fancy yellow diamond weighing 2.02 carats, within a frame of brilliant-cut diamonds, suspended from a necklace set with similarly cut diamonds of yellow and near colourless tints, length approximately 405mm, signed Graff, numbered.

Diamond bracelet, 1930s. Designed as a series of tapered rectangular links, each inset to one side with a circular-cut diamond, length approximately 180mm, French assay and maker's marks.

Pair of diamond ear clips, monture Van Cleef & Arpels, 1973, and a ring. Each ear clip set with a circular-cut diamond weighing 3.01 and 3.36 carats, within intertwined circular motifs, set with single-cut diamonds, inscribed monture VCA, numbered, French assay and maker’s mark’s; together with a ring of similar design, unsigned, size 51, sizing band.

Pair of yellow sapphire and diamond ear clips, Van Cleef & Arpels. Each of foliate design, set with oval yellow sapphires and accented with circular-cut diamonds, each signed Van Cleef & Arpels, numbered, French assay and maker's marks.

Gold, enamel and diamond bracelet-watch, Bulgari. Designed as a snake, decorated with yellow and red enamel, the eyes set with pear-shaped diamonds, the mouth opening to reveal a circular watch dial, length adjustable, signed Bulgari, dial signed Piaget.

Gold, enamel and diamond bracelet-watch, Bulgari. Designed as a snake, decorated with blue, green and yellow enamel, the eyes set with pear-shaped diamonds, the mouth opening to reveal a circular watch dial, length adjustable, signed Bulgari, dial signed Jaeger LeCoultre/Bulgari, case numbered.

Gold, ruby and diamond clip, 1940s. Designed as a gold ribbon, set with oval and circular-cut rubies and highlighted with circular-cut diamonds.

Emerald and diamond ring, Van Cleef & Arpels, 1940s. The geometric mount set with a step-cut emerald weighing 4.73 carats and baguette diamonds, size 48, signed Van Cleef & Arpels, numbered.

Emerald and diamond bracelet. Composed of undulating bands of step-cut emeralds and circular-cut diamonds, length approximately 170mm.

Emerald and diamond torque necklace. Composed of alternating curved platinum and gold rods, hinged at the back, the front terminals set with a collet-set step-cut emerald and a similarly cut diamond, inner circumference approximately 395mm.

Sapphire and diamond ring, Grima, 1960s. Set with a step-cut sapphire between lines of baguette diamonds, to a geometric textured mount, signed Grima.

Ruby and diamond brooch, Harry Winston, circa 1970. Of foliate design, set with oval and circular-cut rubies and marquise-shaped diamonds, signed Winston, mark for Jacques Timey.