Mystic Topaz and Gold Prong-Set Cocktail Ring

This item is a prominent cocktail ring featuring a large, oval-cut center stone held in a traditional prong setting. The gemstone exhibits a distinct iridescent, multi-colored play of light encompassing shades of purple, green, blue, and pink, which is characteristic of 'Mystic Topaz' (a natural topaz treated with a thin film metallic coating). The stone is remarkably large, approximately 15-20 carats in estimated visual size. The mounting appears to be a polished yellow metal, likely yellow gold or gold-plated sterling silver, featuring a specialized decorative shank with ribbed or scalloped detailing on the shoulders. The construction uses four heavy prongs to secure the pavilion of the stone. Regarding condition, the metal shows a bright luster with minimal visible surface scratching, though the gemstone's facets should be carefully inspected for 'frictional wear' or thinning of the surface coating common in mystic gems. No maker's marks are visible from this angle, but the style is contemporary, likely dating from the late 20th century to the present. The overall craftsmanship suggests a mass-marketed fine jewelry piece designed for high visual impact and fashion appeal.