Antique Art Deco Sterling Silver Marcasite Black Onyx Glass Brooch Pin c.1920s

Beautiful antique Art Deco–era brooch crafted in sterling silver and set with shimmering marcasite stones surrounding a large oval black cabochon (most likely black glass, as was typical of the period).
The design features elegant scroll and floral detailing, bridging late Art Nouveau softness with early Art Deco symmetry — a classic look from the 1915–1930 period. The dark center stone contrasts strikingly with the sparkle of the marcasites, making this a timeless and very wearable antique piece.( I struggled, not getting my reflection in the carbochon)
A wonderful example of early 20th-century craftsmanship, perfect for collectors of antique silver jewelry or as a statement accessory.
Very good antique condition consistent with age.
• All marcasite stones appear present
• No cracks or major chips to the center cabochon
• Light surface wear and patina consistent with age
• Clasp and hinge function properly
Please note: this is an antique item, not new, and shows gentle wear