A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set...

A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7

A VINTAGE GEMSET FLOWER BASKET BROOCH in 18ct yellow gold and platinum, designed as a basket of flowers, set with single cut diamonds, round cut rubies, emeralds and sapphires, stamped 18ct PLAT, 4.0c

18ct yellow gold & platinum brooch, collet-set with 3x brilliant-cut diamonds, G colour, VS2, central diamond approx 0.12ct. Other two 0.08ct each. 3.8 grams, 5.7cm.

ANDREW GRIMA, A VINTAGE AGATE AND DIAMOND BROOCH, 1973 in 18ct yellow gold, set with a polished slice of agate accented by a round brilliant cut diamond, signed GRIMA, AG Ltd, full British hallmarks f

CARTIER, A VINTAGE CITRINE AND DIAMOND BROOCH, 1940s in 18ct yellow gold, designed as a floral cluster, set with emerald, pear and fancy cut citrines, accented by round cut diamonds, signed Cartier, n

AN ANTIQUE PEARL AND DIAMOND STAR BROOCH / PENDANT in 18ct yellow gold, designed as an openwork star set throughout with pearls, accented by an old cut diamond, one pearl missing, stamped 18CT, 4.5cm,

A VINTAGE DIAMOND BROOCH, DAVID SHACKMAN & SONS 1975 in 18ct yellow and white gold, formed of naturalistic gold batons accented by crescent moon designs, set with round cut diamonds, maker's mark DS&S

Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch. Designed as an open work bow with black velvet backing, the center featuring one old European-cut diamond weighing approximately 0.30 ct., accent

A VINTAGE AQUAMARINE AND DIAMOND BOW BROOCH, CIRCA 1950 in platinum and 18ct white gold, set with two tapered fancy cut aquamarines, accented by rose cut, single cut and round brilliant cut diamonds,

NO RESERVE - A VINTAGE GEMSET FLOWER SPRAY BROOCH in 18ct yellow gold, designed as a bouquet of flowers, set with round cut rubies, sapphires and diamonds, full British import assay marks, 5.5cm, 9.6g

CARTIER, A VINTAGE MULTIGEM TUTTI FRUTTI PLANT POT BROOCH, CIRCA 1990 in 18ct yellow gold, the pot set with polished onyx and round brilliant cut diamonds, the plant set with carved chrysoprase and ca

A DIAMOND AND ENAMEL BROOCH, EARLY 20TH CENTURY in platinum and yellow gold, the oval body of openwork design, set with a central old cut diamond between panels of blue guilloche enamel, accented by f

Stunningly crafted in both glowing yellow gold and the palest platinum, this openwork butterfly features icy diamonds, bright blue sapphires, rich red rubies and electric green demantoid garnets.

A VINTAGE DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a floral cluster of old European and round brilliant cut diamonds, stamped 18ct & PLAT, size K1/2 / 5.5, 1.9g. 

NO RESERVE - A VINTAGE RUBY AND DIAMOND RING in 18ct yellow gold and platinum, set with a round cut ruby in a cluster of old cut diamonds, stamped 18CT & PLAT, size Q / 8.25, 2.3g. 

A FINE DIAMOND DRESS RING in 18ct yellow gold and platinum, the stylised openwork face set throughout with old cut diamonds, no assay marks, size J1/2 / 5, 3.6g.

Italian 18kt yellow gold woven openwork brooch set with 30 round brilliant cut diamonds. Each diamond weighs approx. 0.10 cts each; total approx. diamond weight is 3 cttw. Stamped, "Italy, K18", with

DAVID WEBB, A PAIR OF VINTAGE DIAMOND CLIP EARRINGS, 1960S in 18ct yellow gold and platinum, the domed bodies pave set with round brilliant cut diamonds within a reeded border, signed Webb, stamped 18

BUCCELLATLI, A VINTAGE DIAMOND BOMBE DRESS RING in 18ct yellow gold and white gold, the tapering band of openwork design, set with round brilliant cut diamonds within star shaped pierced motifs, signe

AN EXQUISITE BELLE EPOQUE PINK TOPAZ AND DIAMOND BROOCH in yellow gold and platinum, set to the centre with a cushion cut pink topaz of approximately 7.35 carats, within two concentric borders of old

A SAPPHIRE, DIAMOND AND RUBY PANTHER BROOCH in 18ct yellow gold, set with round cut sapphires, rubies and diamonds, British hallmarks for 18ct gold, 3.9cm, 6.0g.

AN ART NOUVEAU RUBY AND DIAMOND BROOCH in 18ct yellow gold, in foliate design set with a row of alternating round and oval faceted rubies and old cut diamonds, later full British hallmarks, 3.6cm, 6.5

AN ANTIQUE SAPPHIRE, PEARL AND DIAMOND BROOCH in 18ct yellow gold, designed as an elongated oval, set with step cut sapphires, two pearls and two cross motifs set with rose cut diamonds, stamped 750,

This is a 14 karat yellow gold vintage diamond bee brooch. The bee is set with approximately 2 carats of round, brilliant-cut near colorless, SI1 diamonds. The bee is approximately 1" in diameter and