This antique circa 1900s diamond engagement ring is centered with one (1) old European brilliant cut diamond weighing 1.82 carats that is set in an eight-prong buttercup style setting. The shoulders and profile have engraved swirl design. The ring measures 8.5mm at the top, rises 6.0mm above the finger, tapering to 1.7mm wide and 0.8mm thick at the base of the shank. It is currently a size 7. We offer free ring sizing.