gemstone

An Opal and Diamond Brooch, set in 18K gold, the large rectangular opal of fine colour set to the centre of an enamelled brooch with four small di...

An Edwardian Pearl and Diamond Brooch the tapering bar set throughout with six graduated pearls and rose cut diamonds, in white millegrain settin...

VICTORIAN OPAL AND DIAMOND BROOCH, High carat gold. Vibrant well matched opals with good play of colours. Diamonds bright and lively. W. 3.8 cm. 6...

A Burmese sapphire and diamond brooch, early 20th century, set with a round cut sapphire, estimated as approximately 1.85ct, and a pear cut sapp...

BELLE EPOQUE PEARL AND DIAMOND BROOCH, 1900s of ribbon and bow design millegrain set with circular-, single- and rose-cut diamonds, suspending a...

DIAMOND BROOCH, 1890s designed as a spray of lily of the valley, set with old mine- and rose-cut diamonds, 5cm long

A SAPPHIRE AND DIAMOND BROOCH In a floral star motif, with a central oval cut sapphire measuring 10.1mm x 8.4mm, with a surround of old and rose ...

An opal and diamond brooch, set with an oval opal cabochon, surrounded by two rows of old-cut diamonds in a milgrain & claw setting, diamonds appr...

A 19TH CENTURY MOONSTONE AND DIAMOND BROOCH, CIRCA 1880 Designed as a crescent moon, set with graduated old-cut diamonds and a ‘man in the moon’ ...

A VICTORIAN DIAMOND BROOCH Set with old cut diamonds with a total estimated diamond weight 3.00 carats in a closed collet setting, in silver topp...

PAIR OF DIAMOND BROOCH CLIPS, 1960s each designed as a floral motif of textured open work ribbons accented with brilliant-cut diamond and bead d...

A gold backed and platinum fronted, sapphire and diamond brooch designed as a tied bow, collet set with the principal old cut diamond at the centr...

A LATE 19TH CENTURY DIAMOND BROOCH, CIRCA 1880 Designed as a swallow in flight, set throughout with old and rose-cut diamonds, mounted in silver ...

PIERRE STERLE: PAIR OF DIAMOND EAR CLIPS AND A DIAMOND BROOCH, 1950s the ear clips each designed as an open work flame motif edged in single-cut...

VICTORIAN DIAMOND BROOCH, Diamonds bright and lively, totalling approx. 4 ct. W. 2.5 cm. 6.3 grams. Fitted case.

RONDINE: A LADY'S ENAMEL AND DIAMOND BROOCH WATCH, ITALIAN, 1960s with Swiss manual wind 17 jewel movement signed 'MARC NICOLET', the glazed cir...

RETRO GOLD, SAPPHIRE AND DIAMOND BROOCH, 1940s designed as a stylised plume of gold scrolled feathers, embellished with calibre-cut sapphire ste...

AMETHYST AND DIAMOND BROOCH, EARLY 20TH CENTURY centring on an oval mixed-cut amethyst, framed by a ribbon tied garland of ears of wheat, milleg...

DIAMOND BROOCH, 1950s of knot design set with brilliant-cut and baguette diamonds, 3 x 2.5cm

DIAMOND BROOCH, 1890s designed as a sword, the hilt and guard set with circular-cut diamonds, mounted in silver and gold, 9cm long, fitted case

BEN ROSENFELD, A 1960's Modernist Ruby And Diamond Brooch, in yellow gold, of textured, abstract foliate form, accented by round cut rubies and ro...

EMERALD, RUBIES AND DIAMOND BROOCH. 18 ct. gold. Set with bright and lively diamonds totalling approx.: 2.10 ct. Vibrant rich emeralds totalling a...

FINE EDWARDIAN DIAMOND BROOCH high carat gold and platinum. Diamonds totalling approx. 1.30 ct. F-H colour, VS/SI clarity. W. 2.9 cm. 7 grams. Fi...

AN ANTIQUE MOONSTONE AND ROSE CUT DIAMOND BROOCH, in the form of an arrow

A Queen Victoria Golden Jubilee diamond brooch '1887'.

A DIAMOND BROOCH (2) Designed as a wreath, mounted with old, transitional and rose cut diamonds, detailed to the folding hook 14K and with indist...

BELLE EPOQUE DIAMOND BROOCH, 1910s of circular open work design, millegrain set with circular- and rose-cut diamonds, diameter 3.5cm

CARTIER. A Sapphire & Diamond Brooch in 18K yellow gold, set with sapphires and diamonds, signed Cartier and stamped 18K Size: 32x32mm Weight: 8.0g

RARE ANTIQUE GEORGIAN 18th CENTURY DIAMOND BROOCH, Diamonds totalling approx. 5.70 ct. Diamonds bright and lively. W. 3.4 cm. 9.8 grams. Antique ...

PRESUMABLY RUSSIAN, ATTRACTIVE SAPPHIRE PEARL AND DIAMOND BROOCH, High carat gold. Vibrant cabochon cut blue sapphire. Pearl of approx. 6.2 mm. (...

ANTIQUE VICTORIAN PEARL AND DIAMOND BROOCH, Diamonds bright and lively. Pearls well matched (untested, believed to be natural). W. 4.5 cm. 5 grams.

ANTIQUE SAPPHIRE AND DIAMOND BROOCH, Fine cabochon cut blue sapphire of approx. 7.16 ct. Diamonds bright and lively. W. 6 cm. 26.7 grams.

A 19TH CENTURY ENAMEL AND DIAMOND BROOCH, CIRCA 1880 The horse in gallop with enamelled seated jockey, pavé-set with old and rose-cut diamonds, m...

A superb and rare platinum and diamond brooch in a form of a Sheep, length approx. 40mm, height 40mm, circa 1910.

AN EMERALD AND DIAMOND BROOCH With a central claw set emerald cut emerald measuring 8.06mm x 6.27mm with an estimated weight of 1.27 carats, with...

A PLATINUM AND DIAMOND BROOCH Designed as a spray, claw set with round brilliant, marquise and emerald cut diamonds, detailed PLAT, length 6.2 cm...

CERTIFICATED NATURAL SALTWATER PEARL AND DIAMOND BROOCH, in high carat gold. Largest pearl approx. 8.2 mm. (Certificated Natural saltwater). Diamo...

VERY FINE CERTIFICATED BURMA SAPPHIRE AND DIAMOND BROOCH, Rich and vibrant cabochon cut blue sapphire of 6.44 ct. (Certificated, Burma, No heat). ...

TOURMALINE AND DIAMOND BROOCH, ca. 1870. Rich and vibrant tourmaline with good clarity, of approx. 14.68 ct. Diamonds bright and lively, totalling...

OPAL AND DIAMOND BROOCH/PENDANT, Vibrant opals with good play of colour including reds. Diamonds bright and lively. W/ 2.7 cm. 11.4 grams. Removab...

ANTIQUE ESSEX CRYSTAL AND ROSE CUT DIAMOND BROOCH. Testing gold. Bright and livelyh diamonds. W: 2.8 cm. 10.3 gram.

A ROCK CRYSTAL, SAPPHIRE AND DIAMOND BROOCH, BY FASANO Designed as a Lily of the Valley branch, with carved rock crystal frosted petals, accented...

AN ART DECO DIAMOND BROOCH, FRENCH, CIRCA 1925 Of pyramidal design, centring an old European-cut diamond weighing approximately 0.65ct, set throu...

A gold, sapphire and diamond brooch, claw set with nine oval cut sapphires, otherwise mounted with small cushion cut diamonds at intervals, detail...

THREE DIAMOND BROOCHES Including two bow motif brooches, one set with old and rose cut diamonds, 3.6cm in length, the other with rose cut diamond...

A VICTORIAN GOLD AND DIAMOND BROOCH AND PAIR OF EARRINGS, 1890s the brooch of oval design decorated with bead and wire work detail accented with...

An early 20th century diamond brooch, the panel with pierced scroll detail, set with a central old brilliant-cut diamond, central old brilliant-cu...

CERTIFICATED NATURAL SALTWATER PEARL, EMERALD AND DIAMOND BROOCH, Large vibrant emerald of approx. 12.18 ct. Pearls 7.0 - 6.1 mm. (Certificated, ...

VICTORIAN DIAMOND BROOCH. High carat gold. Lively diamonds. Pearls well amtched. L 3.2 cm. W 4.1 cm Fine brooch, locket back (glass missing). ...

BELLE EPOQUE PEARL AND DIAMOND BROOCH High carat gold. Large pearl of approx. 12.6 mm. Surrounded with smaller pearls. Fine and lively diamonds. D...

ART DECO DIAMOND BROOCH High carat gold Set with bright and lively diamonds totalling approx. 1.53 ct. W: 36.72 mm. 5.6 gram.

Edwardian-style topaz and diamond brooch with 2 piece gift box Diamonds: 5 x round cut 0.07cts total approx Topaz: natural Cabochon oval x...

A CULTURED PEARL AND DIAMOND BROOCH, CIRCA 1960 Of fan-shaped palm design, centring a cultured pearl cluster of grey tint, highlighted with brill...

AN EARLY 20TH CENTURY DIAMOND BROOCH Of lozenge-shaped openwork design, centring a flower motif, millegrain-set with old European-cut diamonds, h...

A VINTAGE AQUAMARINE AND DIAMOND BROOCH, the large rectangular aquamarine to a scrolled brilliant cut diamond surround, mounted in 18ct white gold...

An Early 20th Century Diamond Brooch of openwork scroll form, set throughout with old cut and rose cut diamonds, suspending a single old cut diam...

A Late 19th Century Enamel and Diamond Brooch the red enamel lozenge shaped plaque in a yellow rubbed over setting, within a border of rose cut d...

A Synthetic Sapphire and Diamond Brooch the central round brilliant cut diamond flanked by four square synthetic sapphires to either side, with ...

DIAMOND BROOCH designed as a textured coronet, accented with brilliant-cut diamonds and cultured pearls, 3cm x 1.5cm

An Art Deco Diamond Brooch in 18k white gold, set with old cut diamonds and rose cut diamonds, all stones totalling approximately Xcts. Unmarked b...