Vintage Silver-Tone Rhinestone Figure-Eight Brooch

This is a vintage mid-20th-century costume jewelry brooch, likely dating from the 1950s or 1960s. The piece features a horizontal figure-eight or 'double halo' silhouette, constructed from a silver-tone base metal that appears to be rhodium-plated. The frame is densely set with approximately 24 circular, faceted clear glass rhinestones, each secured within an individual pronged collet setting with a decorative scalloped or beaded edge. Centered within the loops is a polished metal element shaped like a stylized knot or abstract avian form, featuring a smooth, domed center and two textured, fanned-out 'wings' with fine linear engraving. The overall construction suggests a medium-quality mass-market production of the Mid-Century Modern era. Regarding condition, the piece shows visible signs of age including significant oxidation and pitting on the central polished metal surface. Several rhinestones exhibit 'greying' or darkening, indicative of moisture damage to the foil backing (foil rot). The silver-tone plating shows wear and tarnish, particularly in the recessed areas between the stones. The pin mechanism is partially visible on the reverse, indicating a standard pin-and-safety-catch assembly typical of this period.