Created in the 1960s, this 18K gold Cartier ring. is set with a superb oval black opal cabochon. Weighing approximately 2.25 carats, the black opal...

This three-tiered antique gold necklace is both elegant and original, with multiple chains and swags that make up a draping fringe, suspending a ra...

This exuberant black opal ring by Marcus & Co. fuses historic and global jewelry styles within the Art Nouveau sensibility. Along with the spar...

This stunning brooch by Marcus & Co. is abstracted from the delicate shapes of flowers and leafy vines, creating a flowing Art Nouveau form. It...

Dating from circa 1900, these Marcus & Co. gold cuff links are designed as asymmetrical double links, variously set with a tiger’s eye, moonsto...

Set with a natural-form black opal, encircled by gold grapevines and conforming leaf and vine motifs, this gorgeous Tiffany & Co. ring by Louis...

Inspired by a noted collaboration with the renowned artist and innovator, Alphonse Mucha, this Georges Fouquet silver and opal cloak clasp, in all ...

Dating from the late 19th century, this precious white opal and diamond necklace is set in silver-topped gold. Designed as a fringe necklace, it su...

Dating from the 1950s, these gold cuff links are set with carved dark mother of pearl and precious white opal. Designed as double circular links jo...

This creation by Georges Fouquet, one of the great Parisian artist jewelers of the 20th century, is a pendant necklace of exquisite lightness and c...

This stick pin from Marcus & Co. is a miniature representation of Renaissance Revival within the Art Nouveau period, set with a square black op...

This gold, enamel, and diamond flower pendant necklace was created around 1900 by Parisian Art Nouveau jeweler, Antoine Bricteux. Designed as a pol...