Gold Ring with Large Green Cabochon Gemstone

This is a vintage or antique cocktail ring featuring a prominent, large, oval-shaped gemstone in a light green hue, most likely prasiolite (green amethyst) or perhaps a large peridot or green quartz. The gemstone is cabochon cut, meaning it is polished into a smooth, rounded shape rather than faceted, which enhances its translucent to semi-translucent appearance. The color is a soft, somewhat milky green, with subtle variations and inclusions visible within the stone, hinting at its natural origin. The stone is set in a substantial gold-toned metal, likely yellow gold, indicating good quality. The setting appears to be a bezel or partial bezel setting, securely holding the large stone, with claw-like prongs embracing the stone at various points, suggesting a robust construction. The band of the ring is wide and solid, with a distinctive split, possibly swirling or ornate, design where it meets the central stone, adding a decorative element. The metal shows some natural patina consistent with age and occasional wear, but no significant damage like deep scratches or dents are immediately visible. The overall craftsmanship suggests a piece made for visual impact, a common characteristic of cocktail rings designed to showcase a large central stone. The style points towards a mid-20th century aesthetic, perhaps 1940s-1970s, due to the bold design and cabochon stone.