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Cartier diamond brooch Length: 4 cm, about 1920

Art Deco Diamond, Emerald, Onyx, Platinum Brooch The brooch features full-cut diamonds weighing a total of approximately 2.00 carats, enhan...

Exceptional Art Deco aquamarine and diamond stylised buckle brooch, set to the centre with a cut-cornered rectangular aquamarine flanked by stepped and baguette-cut aquamarine four-stone shouders to brilliant-and baguette-cut diamond mount, set to the four corners with a wedge shaped aquamarine embelllished by further baguette and square-cut aquamarines, signed by Cartier London.

Art Deco Diamond and Black Onyx Brooch by Cartier, Paris, 1923.

Broche, Paris, 1924 Platine, monture serti perlé, diamants taille brillant, rubis, saphirs et émeraudes taille suiffée, émail Collection Van Cleef & Arpels © Patrick Gries / Van Cleef & Arpels

A Rare Art Deco Diamond and Emerald Brooch, Van Cleef & Arpels, circa 1925

An Art Deco brooch, circa 1925, French, composed of platinum, diamond and enamel.

An art deco diamond and ruby double clip brooch, Trabert & Hoeffer-Mauboussin, circa 1935 each plaque designed as a pavé-set diamond bow, with baguette-cut diamond trim, enhanced by oval and calibré-cut rubies; signed Trabert & Hoeffer-Mauboussin, no. 3845; estimated total diamond weight: 14.50 carats; mounted in platinum.

Rock crystal, emerald and diamond brooch, 1930s. | © 2014 Sotheby’s


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The pavé-set diamond openwork hexagonal frame decorated with carved emerald, sapphire and ruby leaves, enhanced by black enamel detail, to the calibré-cut emerald, sapphire and baguette-cut diamond bombé motif, 1920s, 5.8 cm, with French assay mark for platinum Signed Mauboussin France, no. 93881

Christie's Magnificent Jewels - Geneva - May 14th, 2014

Art Deco Carved Frosted Rock Crystal, Colored Stone and Diamond Double Clip-Brooch Platinum, 14 kt. white gold, the bold frosted rock crystal clips carved in a stylized scroll motif centering one round collet-set sapphire and one round ruby, acccented by tapered curved ribbons of small old-mine cut diamonds, rectangular-cut sapphires and rubies, signed RF, with hallmarks, circa 1935.

Art Deco Platinum Double Clip Diamond Sapphire Pin.

Massoni Sapphire and Diamond Brooch, 1970s

Massoni Sapphire and Diamond Brooch |

Art Deco Platinum, Cabochon Sapphire, Diamond and Black Onyx Brooch The modified rectangular openwork brooch highlighted by 16 buff-topped cabochon sapphires, decorated with numerous small old European-cut diamonds, accented by a stylized key-fret motif set with calibre-cut buff-topped black onyx, with French assay mark, circa 1920.

A DIAMOND, CORAL, ONYX, JADEITE AND ENAMEL BROOCH Designed as a black enamel bar pin with old European-cut diamond detail, enhanced by coral drop terminals, suspending a series of similarly-designed links to the rectangular jadeite plaque, depicting a red enamel and single-cut diamond Oriental scene, to the lower onyx, coral and old European-cut diamond pendants, mounted in gold.

Art Deco Jasper Agate & Diamond Pin


An opal, demantoid garnet and diamond brooch, circa 1900 The oval cabochon opal within a pierced circular-cut demantoid garnet surround and a rose-cut diamond border, mounted in silver and gold, French assay mark, length 3.8cm.

An art deco diamond and sapphire cascade brooch, c. 1925.

Cartier - Paris, c. 1920. Art Deco Onyx and Diamond Bar Brooch set in platinum. 7 panels of onyx, 45 diamonds approximately 4.36 cts. length: 2-1/4 inches.

A diamond double-clip/brooch, circa 1935, the opposing shield-shaped clips of openwork entwined ribbon design, set with old brilliant-cut diamonds, each with a principal marquise-cut diamond with a baguette-cut diamond fan-shaped border, diamonds approximately 7.00cts., length 6.8cm.

Bonhams : A diamond double-clip/brooch, circa 1935,

PLATINUM, EMERALD AND DIAMOND PENDANT-BROOCH, signed Mauboussin, Paris, with French assay and workshop marks; circa 1935.

Lot | Sotheby's

A retro citrine and emerald brooch, Van Cleef & Arpels, circa 1940

Bonhams : A retro citrine and emerald brooch, Van Cleef & Arpels,