Vintage Gold-Tone Locket Ring with Green and Yellow Paste Stones

This item is an antique or vintage-style cocktail ring, specifically a locket or poison ring with an opening compartment beneath the central gem setting. The main body of the ring, particularly the substantial hexagonal or octagonal top, is crafted from a gold-toned metal, likely brass or a gold-filled/plated alloy, given its aged appearance and the intricate ornamentation. The surface of the 'box' or locket section is highly ornate, featuring deeply engraved or embossed scrollwork and possibly floral or foliate motifs, indicating a rich, decorative aesthetic. The metal shows visible signs of age, including darkening and patination in the recessed areas, which accentuates the relief patterns and suggests an older manufacturing period. The top of the ring is adorned with multiple faceted glass or paste stones. A prominent, larger oval or round-cut emerald green stone serves as the central focal point, surrounded by smaller accent stones. These include additional emerald green stones and several vibrant golden-yellow or amber-colored stones, all set in prong settings, though some prongs appear partially obscured by the intricate metalwork. The setting style and the multi-colored imitation gemstones are characteristic of costume jewelry from the mid-20th century, possibly the Art Deco revival or mid-century modern period (1930s-1960s). The band is noted to be adjustable, which is a common feature in vintage costume jewelry for versatility and mass production. The 'basket' or locket mechanism on the ring opens, confirming its functional design as a locket or poison ring, intended to hold small keepsakes, perfume, or even a small amount of liquid or powder. No specific manufacturer's marks or signatures are visible in the provided image, but the overall craftsmanship points to a well-made piece of costume jewelry from its era, valued for its ornate design and collectible nature rather than precious materials.