Antique Opal and Onyx Cameo Brooch with Diamond Halo in Yellow Gold

An exquisite antique cameo brooch featuring a finely carved opal and onyx depiction of a female profile. The iridescent green and blue opal headdress creates a vibrant contrast against the dark onyx face. This unique centerpiece is encircled by a halo of round brilliant diamonds set in a classic yellow gold oval frame.