Yellow Gold Marquise Diamond Solitaire Ring

This item is a yellow gold ring featuring a single marquise-cut diamond. The ring band appears to be solid and relatively broad, tapering slightly towards the top where it splits to form a tension setting or a similar style that cradles the marquise diamond. The gold has a warm, yellow tone typical of 10k or 14k gold, though a specific karatage cannot be determined from the image. The surface of the gold shows some signs of wear consistent with normal use, including minor scratches and possibly some dulling of the polish, creating a soft patina. The marquise diamond is centrally set, oriented horizontally across the finger. Its elongated shape and pointed ends are clearly visible. The diamond itself exhibits typical brilliance, reflecting light, but its clarity and color grades cannot be assessed without closer examination. The setting appears secure, holding the diamond firmly. From the visual style and the broad, classic band, the ring likely dates from the mid-20th century to the late 20th century. There are no visible manufacturer's marks or signatures in the provided image. The craftsmanship appears to be standard for mass-produced fine jewelry of its era, with functional setting and a sturdy band. No significant damage such as chips, cracks, or major deformations are apparent; any visible wear is consistent with typical use over time. The overall condition suggests it is well-preserved for its age.