White Gold Marquise Onyx/Black Tourmaline and Diamond Ring

This item is a ring featuring a prominent marquise-shaped dark gemstone, likely onyx or black tourmaline, set in what appears to be white gold. The central stone is elongated and boat-shaped, with pointed ends, and exhibits a smooth, polished surface with a dark, possibly opaque or highly translucent, color. The setting around the marquise stone is sleek, with the metal tapering to a fine point at each end, allowing the stone to be the focal point. Flanking the central stone on either side are two clusters of smaller, round brilliant cut diamonds, with each cluster appearing to contain two diamonds, set in a pave or bead setting. These diamonds provide a sparkling contrast to the dark central stone. The ring's band is crafted from white gold, which is indicated by its silvery-white luster, and has a graceful, curved, or split-shank design where it meets the gemstone setting. The overall condition appears good, with no obvious signs of significant damage, chips, or scratches visible on the central stone or diamonds from the provided image. The metal shows a clean finish consistent with white gold, although typical minor surface wear or light scratches might be present not visible in this resolution. Given the style, particularly the marquise cut stone and the general design, the ring could date from the mid-20th century onwards, perhaps 1960s to 1980s, reflecting a timeless and elegant aesthetic. The craftsmanship appears to be of good quality, with precise stone setting and a well-finished metal structure.