Vintage Gold Nugget and Opal Cocktail Ring

This is a substantial vintage cocktail ring featuring a large, rectangular cabochon-cut opal set within a heavy, textured gold mount. The setting is crafted in a 'nugget' style, characterized by a rugged, organic, and highly irregular surface texture that mimics the appearance of natural gold ore. The opal itself exhibits a vibrant play-of-color, predominantly showing bright electric greens, yellows, and subtle hints of orange and blue against a milky white body tone, suggesting it may be a white opal or a high-quality crystal opal. The stone is held securely by thick, integrated gold prongs that blend into the nugget texture of the frame. The overall construction is robust and masculine or unisex in style, typical of the late mid-century modern period, likely dating between the 1960s and 1970s. The metal appears to be high-karat yellow gold (possibly 14k or 18k), though internal hallmarks are not visible from this angle. The condition shows light wear consistent with age, with minor surface scratches on the gold and a well-preserved polish on the opal face. There are no immediate signs of crazing or cracking on the gemstone, though a professional cleaning would reveal more about the clarity and internal structure. The craftsmanship is bespoke or small-studio production, evidenced by the unique, non-uniform application of the gold nugget casting.