Art Deco Onyx Brooch

A stunning, fine and impressive antique 11.20 carat black onyx and 0.91 carat diamond, platinum and 15k white gold Art Deco brooch; part of our collection of Art Deco brooches.

A stunning, fine and impressive antique Art Deco 7.50 carat onyx, 3.20 carat diamond and platinum brooch; part of our diverse onyx jewelry collections.

A superb Art Deco platinum, diamond, and onyx brooch, notably worn by Yvonne Orji to the 2025 Met Gala after-party.

Art Deco Onyx and Diamond Brooch A round onyx brooch set with an oval old mine diamond.

Art Deco platinum brooch , with approx. 3.80ctw SI/I diamonds and onyx (few stones are chipped).

This exceptionally beautiful 'bow' brooch was made during the Art Deco period and has been set with diamonds and black onyx.

Art Deco Old mine cut Diamond and Onyx on Platinum and Gold Barrette Brooch.

Art Deco onyx fine pearl brooch in platinum. This rectangular brooch features a prominent 10.6 mm pearl.

Art Deco Emerald Diamond and Onyx Car Brooch A car brooch with a hexagonal emerald, diamonds, diamond wheels, and a black onyx base.

An extraordinary Art Deco platinum brooch suite, circa 1930, showcasing the geometric precision and luxury that defined the era.

A striking unisex Art Deco brooch featuring a meticulously carved emerald centerpiece, flanked by carved sapphires and rich onyx accents.

A dramatic and architecturally striking Art Deco brooch that captures the bold geometry and sophisticated contrast of the 1930s.

An Art Deco diamond and onyx set arrow pin or jabot, with rose-cut diamonds and baguette cut onyx millegrain set to the arrow tip and flights, all set in platinum with a gold backing...

Finely crafted in platinum with Old Mine cut Diamonds weighing a total of approximately 7.50 carats and Onyx. Circa 1930s 7/8 x 2 5/8 inches

Art Deco Malachite Bar Diamond Black Onyx Pin Brooch Old miner cut diamonds of approximately 7 carats total, with a rectangular bar of malachite (47 x 11 mm) at the center accented ...

Art Deco Bow Brooch 14ct Gold Stamped Circa 1920s An elegant and timeless Art Deco bow brooch, beautifully crafted in 14ct white gold and stamped accordingly.

An exquisite and rare piece, Cartier platinum tassel brooch from Art Deco era, set with seed pearls ( 1.5mm), approximately 1.00ctw G/Vs diamonds, black onyx and enamel.

An emerald, diamond and onyx Art Deco brooch, ca. 1920, in platinum. The facetted square emerald weighs 2.14 carats and is of Colombian origin.

Finely crafted in platinum with an Onyx, as well as Old European and Baguette cut Diamonds weighing a total of approximately 2.50 carats. Made in France Circa 1920s 1 1/4 x 2 1/2 inches

Art Deco onyx, diamond and emerald cabochon brooch.

Art Deco Onyx and Diamond Brooch in Platinum and Gold An iconic Art Deco brooch of impressive scale and striking presence, exemplifying the bold geometry and refined elegance of the...

Onyx Diamond and Ruby Bow Brooch from the late 19th Century.

An exceptional and highly geometric Art Deco bar brooch (circa 1920), masterfully crafted in solid platinum.

This exceptional French Art Deco diamond and onyx brooch is a sophisticated 1920’s design, centered by an old pear shape diamond weighing approximately 2.00 carats.

This iconic Art Deco brooch is embellished with an impressive collet set onyx panel, bearing a tiered geometric carved design.

Platinum onyx diamond bar pin, signed TIFFANY & CO 5554. Old European cut diamonds weighing approx. 0.90 cts, EF VS, measures 2 1/2 inches, weight 3.6 dwt

A superb and stylish Art Deco diamond and Onyx bar pin brooch featuring a center diamond weighting approximately 0.50 ct.

This Art Deco French bulldog brooch is crafted in platinum with carved black onyx, diamond accents, and enamel detailing.

This sublime Art Deco brooch is new to our collection. Beautifully set with a stunning selection of Rose Cut, Eight Cut and Old European Cut diamonds totalling an estimated five car...

Vivid emerald accents add a touch of vibrant color, enhancing the geometric symmetry of the design. Inspired by classic Art Deco aesthetics, the brooch feels both powerful and refined.

This Platinum Black Onyx and Diamond Brooch is a striking blend of boldness and elegance. The centerpiece features 2 large black onyx gemstones, carefully set in a polished platinum ...

This fabulous large Art Deco 1925 circa brooch has been later modified on the back to be worn also as pendant by two back side hooks as shown through photos Wide oval with amazing wo...

Year: 1920s Item Details: Metal Type: Platinum [Hallmarked, and Tested] Weight: 16.5 grams Center Diamond Details: GIA Report# : 52229844958 Weight: 1.74 Cut: Old Mine Brilliant Colo...

Art Deco oblong brooch with onyx and diamond Origin: Western Europe, first half of the 20th century.

Estate Art Deco Platinum Onyx and Old Mine Diamond Brooch - VHK#540a Item Details: Metal Type: Platinum with 14K Gold Pin [Hallmarked, and Tested] Weight: 4.2 grams Diamond Details...

This original antique piece features a 5.8mm cabouchon onyx diagonally set from a fine quality old cut diamond weighing approximately 0.40ct both rubover set onto a Deco design bar b...

The subtle geometric form with a note of elegance and sophistication perfectly fits into the Art Deco jewelry style. Brooch Information Style: Art Deco Metal: 14K White Gold Width: 1...

Tiffany & co 1920's beautiful art deco Vintage Brooch pin Onyx and French Cut Diamonds Platinum metal Approx weight 9.0 grams Size: approx 30 x 30 mm This Unique Brooch has a tru...

Designed as a stylized dragonfly with diamonds set on wings and body Diamonds are marquise, hexagonal, baguette, and single cut Weighing approximately 1.70 carats total - H/I color w...

An Art Deco onyx and diamond brooch in gold and platinum, comprising of one teardrop shaped onyx cabochon and thirty-eight rose cut diamonds, set in platinum, atop 18 karat gold.

Indulge in the elegance of this Art Deco-inspired brooch, where timeless beauty meets modern sophistication.

Jade Onyx Diamonds Jabot Brooch Pin Cellini NYC really delicate and fine work of jeweler. The brooch has a simple lock mechanism, the bigger part must be turned to a side to be rele...

A French Art Deco diamond, coral, black onyx and platinum brooch, with an open, circular centre, set with buff top black onyx, in a channel setting, with bow wings, grain set with ei...

A Charlton & Co. Art Deco double clip brooch made of platinum, with two polished black onyx panels accented with diamonds.

This Onyx and Diamond Art Deco–style circle arrow brooch is a striking symbol of elegance and bold design.

Compelling, this Art Deco–style arrow brooch showcases a striking harmony of vivid turquoise, glossy onyx, and brilliant diamond accents.

An Art Deco brooch designed as a jade Buddha with a radiating diamond aura and ruby belly button seated on a carved onyx, coral and diamond plinth, in platinum.

The subtle geometric form with a note of elegance and sophistication perfectly fits into the Art Deco jewelry style. 14K White Gold. Brooch Information Width: 19 mm.

The subtle geometric form with a note of elegance and sophistication perfectly fits into the Art Deco jewelry style. Brooch Information Width: 13 mm.

Art Deco silver Broach set with a large onyx in the middle and marcasites, English ca 1930's One marcasite is missing, see pictures

An exquisite example of Art Deco jewelry design, this gold brooch incorporates tsavorites, onyx, and diamonds in a lovely geometric shape.

This is a stunning antique Art Deco French Parrot Bird Brooch with a Rock Crystal square frame perch, two parrots in Sterling Silver with paste and Black Onyx adornment.

This Yellow Sapphire Onyx and Diamond Art Deco-Style Bee Brooch features a stunning yellow sapphire as the body of the bee, with intricate French cut onyx that create a bold contrast.

A striking Art Deco platinum and diamond brooch, featuring black onyx and ruby; circa 1920s.

Brooch Information Style: Art Deco Metal: 14K White Gold Width: 44 mm.

This captivating 18K white gold brooch is a dazzling interpretation of Art Deco design, crafted with remarkable detail and movement.

Striking, to state the obvious, this Art Deco inspired brooch, centering a 5 carat cabochon green agate.

A marvelous design of symmetry along with accents of vibrant color make this Art Deco inspired brooch, masterfully hand in 14k white gold.

Striking, to state the obvious, this Art Deco inspired brooch, centering a 5.02 carat cabochon Momo coral.

Art Deco Diamond and Onyx Lapel Watch A lapel watch suspended from an onyx lozenge-shaped pin and diamond chain. Between the two diamond chains is a hanging briolette diamond. App...