Vintage Yellow Gold and Black Onyx Ring with Diamond Accent

This item is a vintage-style ring featuring a centered oval black onyx gemstone set within an ornate yellow gold mounting. The ring's primary focal point consists of a flat, polished black onyx tablet. In the center of the onyx, there is a small white metal (likely white gold or platinum) floral or four-pronged setting holding a single small round-cut diamond accent. The perimeter of the onyx is encased in a decorative, scalloped gold frame with scrolling filigree-like details, characteristic of mid-20th century or Victorian-revival jewelry styles. The metal appears to be at least 10k or 14k yellow gold based on the color and luster. The shank of the ring exhibits a ribbed or textured design which tapers toward the bottom. Regarding condition, the gold shows minor surface scratches and a light patina indicative of regular wear, but the overall structure remains intact. No significant chips are visible on the onyx surface from this angle. The craftsmanship suggests a commercial production piece from approximately the 1940s to 1960s, often referred to as 'retro' or postwar jewelry. The combination of black onyx and gold was a popular mourning-style aesthetic that became a staple for cocktail and dress rings during this era.