Belle Époque marquise shaped diamond cluster ring. Set with twenty seven round old cut diamonds in open back grain and claw settings with a combined approximate weight of 2.00 carats, to a vertical marquise cluster design featuring curving claws, an intricately pierced gallery and open backholing, leading to raised trumpeting shoulders and flowing through to a solid D-shape shank. Marked yellow gold and platinum, maker's mark for Albert Chambin, French, circa 1905.
