An elegant vintage rhinestone Duette brooch by Coro, designed in the bold geometric style associated with the Art Deco period. The elongated symmetrical form is richly set with brilliant clear rhinestones that create an impressive light-catching surface. Two larger oval stones anchor each side of the design while baguette-cut accents near the center add architectural structure among the surrounding round stones. The stepped geometric openwork and strong symmetry reflect the dramatic design influences that defined Art Deco jewelry of the 1920s and 1930s.

This piece is constructed as a Coro Duette, a patented convertible jewelry system that allowed one accessory to be worn multiple ways. The brooch separates into two matching dress clips that can be worn individually. During the Art Deco era these clips were commonly worn on dresses, lapels, hats, or attached to evening shoes as shoe clips or shoe ornaments. When the clips are joined together they lock into the frame to form a single brooch, creating a versatile accessory prized by collectors of vintage costume jewelry.

The reverse of the piece is stamped PAT. 1457268, referencing the Coro patent for the Duette mechanism. This engineering innovation made Coro Duette jewelry highly collectible and recognizable among enthusiasts of vintage rhinestone accessories.

Condition Report:

The brooch presents in pristine condition with a bright silver-tone finish and exceptional rhinestone brilliance throughout. The stones appear complete and securely set, displaying excellent clarity and sparkle that enhances the dramatic Art Deco styling.

The convertible Duette mechanism functions properly, allowing the piece to separate smoothly into two matching clips and reassemble securely as a brooch. The pin assembly and clip mechanisms operate as intended and hold firmly in place, making this an outstanding example of a classic Coro Duette suitable for wear as a brooch, dress clips, or shoe ornaments.