Platinum Diamond Onyx Brooch

A superb Art Deco platinum, diamond, and onyx brooch, notably worn by Yvonne Orji to the 2025 Met

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

A striking example of antique craftsmanship, this platinum brooch features an onyx centre

This emerald onyx diamond brooch is crafted in platinum. It consists of 33 baguette-cut emeralds

This Platinum Black Onyx and Diamond Brooch is a striking blend of boldness and elegance. The

Seventy-one sparkling white diamonds and faceted black onyx make an elegant statement in this Art

diamonds and black onyx. The handmade platinum frame takes the form of a delicate bow which has been set

Art Deco Old mine cut Diamond and Onyx on Platinum and Gold Barrette Brooch. Circa 1930. Width

Platinum Turquoise Onyx and Diamond Brooch Details: One square cushion-shaped dyed turquoise ap

This gorgeous platinum pin from the Art Deco era, is centered with a sparkling old mine cut diamond

A vintage platinum diamond and onyx brooch circa 1920. The brooch is made up of two rows set with

brooch features three sleek black onyx plaques, paired with 166 round brilliant-cut diamonds totaling

Platinum Diamond and Onyx Bar Style Brooch This stunning brooch is set in platinum and accented by

Platinum onyx diamond bar pin, signed TIFFANY & CO 5554. Old European cut diamonds weighing approx

A super sweet and well-made diamond studded turtle brooch! Its shell is made of a single piece of

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

( 1.5mm), approximately 1.00ctw G/Vs diamonds, black onyx and enamel. Brooch measures 3.75" in length and

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

-set Edwardian brooch circa 1915. Its handmade platinum setting is created around the fine antique

A stunning, fine and impressive antique 1.70 carat black onyx and 2.20 carat diamond Cartier brooch

Like many pieces from the Art Deco era, this Harlequin brooch features contrasting colors

A stunning, fine and impressive antique 11.20 carat black onyx and 0.91 carat diamond, platinum and

A superb and stylish Art Deco diamond and Onyx bar pin brooch featuring a center diamond

luxury jewellery. The detailing on this brooch is simply exquisite. An Onyx outline carefully traces

Year: 1920s Item Details: Metal Type: Platinum [Hallmarked, and Tested] Weight: 16.5 grams Center

An Art Deco diamond and onyx equestrian-themed jabot brooch comprised of a diamond and onyx

Estate Art Deco Platinum Onyx and Old Mine Diamond Brooch - VHK#540a Item Details: Metal Type

Weight: 11.31gr Metal: 18kt white gold and platinum Condition: Very Good Stones: 1 Diamond

A stunning, fine and impressive antique Art Deco 7.50 carat onyx, 3.20 carat diamond and platinum

An Art Deco onyx and diamond brooch in gold and platinum, comprising of one teardrop shaped onyx

cut diamond weighing approximately 0.40ct both rubover set onto a Deco design bar brooch. The bar is

Jade Onyx Diamonds Jabot Brooch Pin Cellini NYC really delicate and fine work of jeweler. The

A French Art Deco diamond, coral, black onyx and platinum brooch, with an open, circular centre

Extreme Art Deco Diamond and French Cut Onyx Brooch c.1920's in Platinum One Old European Cut

Signed "Putti" platinum Black Onyx, carved with figures of a man and a woman, Brooch / Pendant

Beautiful basket brooch in platinum and 18 kt white gold structure mounted with leaves of sapphires

Amazing brooch/pendant in platinum and 18 kt white gold structure mounted with flowers of lapis

carved sapphires and rich onyx accents. Set in platinum, the design is completed with brilliant-cut

Finely crafted in platinum with a Modified Square cut Diamond at the center weighing approximately

Period Art Deco diamond sailfish brooch. Beautiful quality with pave diamond set body and navy and

Finely crafted in platinum with Old Mine cut Diamonds weighing a total of approximately 7.50 carats

Adorable Art Déco platinum, diamond and ruby bird brooch. Hand crafted in platinum, this whimsical

The brooch is set with baguette, circular and fancy-cut diamonds depicting a flowering plant and

brilliant diamonds, totaling 0.40 carats. The brooch measures 2" x 1.5". The brooch is stamped PT900 18K

hours to the meticulous creation of this breathtaking diamond, onyx, and emerald brooch. Every intricate

Finely crafted in platinum with an Onyx, as well as Old European and Baguette cut Diamonds weighing

platinum setting and the bail is secure and in good working condition. The coral, onyx, and diamonds are

A classic example of Art Deco Cartier, this elongated platinum bow pin is set with calibre cut onyx

An emerald, diamond and onyx Art Deco brooch, ca. 1920, in platinum. The facetted square emerald

Art Deco onyx, diamond and emerald cabochon brooch. Set with one hundred and six round old cut

A very fine period Art Deco stick pin. With rows of diamonds and onyx encircled by diamonds in a

The nuance of onyx shading makes the workmanship of this bell pendant / brooch artistic and

Finely crafted in platinum with a Square cut Diamond at the center weighing approximately 1.00

One Art Deco bar pin crafted in platinum with an 18K yellow gold pin portion (Stamped: 750

Adorable platinum bird brooch by Oscar Heyman, set with carved ruby, enamel accents and approx

geological certificate. Created in 1920es. Sapphires and Diamonds with Onyx Platinum Swiss Watch Brooch, Pin

diamond, 18 karat yellow gold and platinum set cat brooch; part of our diverse vintage jewelry and estate