Antique Art Deco 1930s 10.00 Carat Australian Black Opal Brooch with Diamonds

Finely crafted in platinum and 18k yellow gold (and a 14k white gold bail) with a Cabochon Opal in the center weighing approximately 5.00 carats, and Round Brilliant cut Diamonds wei...

Finely crafted in platinum with a Modified Square cut Diamond at the center weighing approximately 1.00 carat, Single, Baguette, and Trapezoid cut Diamonds weighing a total of approx...

This fabulous antique brooch, masterfully designed with elegant Art Nouveau accents, features a wonderful black opal cabouchon measuring 20 x 17mm, rub-over set in the centre in an 1...

A stunning, fine and impressive antique 2.23 carat white opal and 0.82 carat diamond, 9 karat yellow gold brooch; part of our diverse brooches collection. This stunning, fine and impressive antique cabochon cut brooch has been crafted in 9k yellow gold with a silver setting. The rectangular 9k yellow gold frame is ornamented to the center with a feature sixteen-claw set 2.23Ct cabochon cut white opal. The stunning cabochon opal is surrounded by sixteen millegrain decorated individually bezel set Dutch cut diamonds. The pierced decorated brooch is ornamented with a further twenty-eight millegrain decorated bezel set Dutch cut diamonds to the rectangular frame, completing the design. The antique opal brooch...