Measurements: Approx. 1.5" long Condition: Good antique condition with age-related wear consistent with use. Please review all photos for complete condition details. Antique Art Deco brooch featuring a striking geometric design accented with sparkling marcasites, a black onyx-style cabochon centerpiece, and dramatic draped chain details. Finished with a dangling black teardrop accent and an early C-clasp closure consistent with the Art Deco era. The architectural styling and monochromatic palette embody the elegance and sophistication of 1920s–1930s jewelry design. A beautiful statement piece for collectors of antique jewelry, Art Deco fashion, and period accessories.