Onyx Brooches

An impressive antique 0.15 carat ruby and 0.96 carat diamond, black onyx and 18 karat white gold bar brooch; part of our diverse antique jewelry and estate jewelry collections. This fine and impressive antique bar brooch has been crafted in 18k white gold. The bar brooch is ornamented to the center with the 'Patriarchal Cross' or 'Cross of Lorraine', embellished with fourteen channel set French cut rubies. The pierced decorated, shaped frame that surrounds the central two-barred cross is accented with eight pavé set eight-cut diamonds, and framed by a border composed of twenty calibre cut black onyx. The bar to either side of the central setting are set with a further eighteen pavé set eight-cut diamonds, and four calibre cut black onyx to the terminals. The brooch secures to the reverse with a hinged pin and push fit clasp. This antique diamond and ruby bar brooch...

A BUNDA 'Couture' Onyx, Carnelian and diamond brooch made in 18 carat yellow gold, featuring specially cut Onyx and Carnelian stones, surrounded with threadset round brilliant cut di...

Michael Bondanza Onyx Amethyst 18K Gold Bar Brooch circa 1980 Extravagant Michael Bondanza designer brooch made of yellow gold in the shape of a sty...

An Art Deco Diamond, Onyx and Enamel Brooch, France The oval-shaped brooch set throughout with old European, old mine and single-cut diamonds, highlighted with lines of black enamel,...

Signed "Putti" platinum Black Onyx, carved with figures of a man and a woman, Brooch / Pendant. Circled with round brilliant cut diamonds with a total diamond weight of 1.50 carats....

A sophisticated Stork bird brooch by the historical Caribbean jewelers Spritzer & Fuhrmann, with diamonds, coral and onyx. Mounted on 18kt white and yellow gold. Circa 1970

14k gold onyx clip. Measuring 45mm in diameter x 53mm long. Marked 14k. Weight - 24.2 grams.

Style: Brooch / Pin Metal Type: Yellow Gold Metal Purity: 18k Stones: 27 Round Brilliant Cut Diamonds​​​​​​​ 109 Round Rubies 1 Cabochon Ru...

Hand Engraved Pave Savannah Pin Natural Diamonds - 0.63cts F Color, VS Clarity Diamonds and Black Onyx Metal: 18k Yellow Gold/Platinum Double Jewelry Pin...

Designer: Soho Material: 18K white gold Diamond: 50 round brilliant cut= 1.20cttw Color: G Clarity: VS2 Dimensions: pin measures 42mm in length Weight: 9.76 grams