This French ring from the 1830s–1840s is crafted in 18k solid gold, set with a central old-mine-cut diamond framed by turquoise and flanked by additional old-mine-cut diamonds on the shoulders. The bezel forms a square frame, its border constructed from individually cut turquoise—squares and angled stones precisely fitted to create a vivid geometric surround. At the center, an old-mine-cut diamond is open-backed for brilliance, its sparkle emphasized by the turquoise setting. The shoulders each carry a line of old-mine-cut diamonds, extending the geometry outward and balancing the bold turquoise frame. The shank is notably thick and solid, giving the ring presence and weight while anchoring its refined proportions. One turquoise corner is formed by two small stones pieced together, not perfectly matched, and consistents with the hand-set character of the ring.