Vintage Green Marquise Cabochon and Rhinestone Cocktail Ring

This is a vintage-style cocktail ring, likely crafted from silver-tone base metal, possibly rhodium-plated for a bright, non-tarnishing finish. The design features a central marquise-cut cabochon stone in a translucent, muted green hue, potentially jadeite, chrysoprase, or a synthetic imitation. This central stone is bezel-set and serves as the focal point of a radiating, wing-like, or butterfly-inspired motif. Surrounding the central green stone are numerous small, round-cut colorless stones, likely rhinestones or paste, set in prongs. These clear stones exhibit varying degrees of brilliance, suggesting some may be original while others show signs of clouding or wear, common in older costume jewelry. The overall setting is open-worked, giving the piece a delicate, lacelike appearance. The metal shows minor scratching and perhaps some discoloration consistent with age and regular wear, but no significant damage or missing stones are immediately apparent from the image. The prongs appear secure. The construction suggests a mass-produced piece from the mid-20th century, possibly 1950s-1970s, characteristic of costume jewelry designed to emulate more precious gemstone pieces. There are no visible maker's marks or signatures in the provided angle. The quality is typical for costume jewelry, with machine-cut stones and cast metal components.