✨ To Be Cleaned: This ring retains its original vintage patina and would benefit from a gentle cleaning or polish if desired. Many collectors appreciate the natural aged finish. Sold as-is but please reach out if desired to be cleaned like other rings you may see in my shop. Some patina may remain - no acids used, no machines! Mary's work sells well at auction and retains higher value therefore I need to keep my price firm Beautiful vintage Southwestern sterling silver ring featuring a vibrant natural turquoise cabochon with attractive natural matrix. The stone is bezel-set in a classic shadowbox-inspired design with hand-stamped side accents and a comfortable split shank. The ring is signed MD and marked Sterling. The MD hallmark has been attributed by some references to Navajo silversmith Mary Dayea. This attribution has not been independently verified by me, so buyers should review the hallmark photos and make their own determination. • Signed MD • Marked Sterling • Size 7 • Natural turquoise cabochon with visible matrix • Shadowbox-inspired setting • Serrated (sawtooth) bezel • Hand-stamped Southwestern details • Split shank design • Vintage artisan craftsmanship • Please review all photos for measurements, hallmark, and condition. A beautiful vintage piece for collectors of Native American, Navajo, Southwestern, and turquoise jewelry. Ships within 1–2 business days.- I ❤️ love my customers and pack with care and surprises!