Men's Gold-Tone Signet Ring with Black Stone and Accent Diamond/CZ

This item is a men's signet style ring, appearing to be crafted from a gold-tone metal, possibly gold-plated or gold-filled, given the visible wear and darkening that can be observed on the band, especially on the underside. The ring features a prominent, rectangular black stone, likely onyx or a similar dark gemstone/glass substitute, set prominently on the top, forming the 'signet' portion. This black stone has a slightly pyramidal or faceted top surface rather than being completely flat. To the left of the black stone, where the ring band transitions to the main setting, there is a small, round, brilliant-cut clear stone, which could be a genuine diamond or a cubic zirconia (CZ). The setting for this small stone appears to be a bezel or flush setting. The metal band itself is relatively thick and sturdy, with the shoulders leading up to the setting exhibiting a somewhat ornate, possibly carved or textured design, though the exact pattern is not perfectly clear due to image resolution. There are discernible markings on the inside of the band, but they are illegible from the provided image; these markings would typically indicate metal purity (e.g., 925 for sterling silver, 10K, 14K for gold) or a maker's mark. The overall style suggests a mid-20th century to contemporary design, favoring a bold, masculine aesthetic. Visible condition issues include surface scratches and minor abrasions consistent with regular wear, and a notable darkening or tarnish on parts of the gold-tone metal, particularly near the inside edge and on the underside of the band, suggesting it may not be solid gold. The black stone appears to be in good condition without major chips or cracks, and the clear accent stone is present and intact. The craftsmanship appears to be commercial grade. This ring likely dates from the 1970s to 1990s based on its design cues. The ring represents a blend of classic signet styling with a touch of modern accent.