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ENAMEL, OPAL, PEARL AND DIAMOND BROOCH, LATE 19TH CENTURY. Designed as a pair of opposing serpents, their jaws clasping a circular-cut diamond, to a central navette-shaped opal within a diamond-set open work foliate surround of jasmine, suspending a baroque pearl and a diamond drop

DIAMOND DEVANT DE CORSAGE, 1860S. Of foliate design, centring on a diamond cluster within an open work surround of acanthus and ivy leaves, suspending five articulated pendant drops, set with cushion-, pear-shaped, circular- and rose-cut diamonds, further embellished with cushion-shaped and circular-cut stones in cut-down collets, later brooch fitting, original fitted case.

A natural pearl and diamond brooch by René LALIQUE, circa 1900. Featuring a large baroque pearl, flanked by two ribbon bows set with brilliant-cut diamonds, mounted in platinum. Signed LALIQUE. #lalique

GOLD ENAMEL AND DIAMOND BROOCH, LATE 19TH CENTURY

DIAMOND NECKLACE, 1860S. Designed as a pair of wings, set with circular- and rose-cut diamonds, suspending at the front a later baroque cultured pearl drop, fitted case by Gianmaria Buccellati.

Bracelet, 1852-1870..gold, sapphires & opals

An early 19th century paste brooch Of girandole design set with 'aquamarine' coloured vari-shaped mixed-cut pastes, the shaped surmount with central cushion-cut single stone and square and circular accents within a cannetille surround, suspending triple pear shaped drops, in gilt metal mounts with coloured foil backs, circa 1830, the central drop in open mount

Art Nouveau 18 kt Gold, Platinum, Opal, Sapphire, & Garnet Brooch, Louis Comfort Tiffany, Tiffany & Co, ca 1920.

ENAMEL AND DIAMOND BROOCH, LATE 19TH CENTURY - designed as a pair of opposing dragonflies with plique-a-jour enamel wings and diamond enhanced eyes, surrounding a stylised Kingcup, the leaves and buds further embellished with enamelled decoration. | Sotheby's