Vintage Filigree Marquise-Shaped Estate Ring

This is a yellow gold-toned heirloom ring featuring a prominent marquise-shaped center setting. The ring's face is characterized by intricate openwork filigree and scrollwork, which suggests a design influenced by the Art Deco or Edwardian revival periods. The central focal point appears to be a clear or light-colored marquise-cut stone, possibly a diamond, white sapphire, or crystal, though the luster is muted in the current lighting. Surrounding the center are smaller dark accents, likely marcasite or small beads of silver/gold, adding a textured 'milgrain' look to the borders. The shank of the ring transitions from the wide decorative head into a smooth, solid band. Regarding condition, there is visible tarnish and patina within the recessed areas of the metalwork, which is common for older jewelry containing silver or low-karat gold alloys. The band shows slight signs of wear consistent with regular use over several decades. The overall craftsmanship exhibits high-quality metal casting and delicate wirework, indicating it was likely a fine jewelry piece from the mid-20th century. No specific maker's marks are visible in the photograph, but the symmetry and complexity point to professional manufacture.