Edwardian marquise shape diamond cluster ring. Set with three round old cut diamonds in open back claw settings with a combined approximate weight of 0.85 carats, further set with six round eight cut diamonds in open back grain settings with a combined weight of 0.06 carats. The total approximate diamond weight is 0.91 carats to a vertical marquise cluster design featuring curving claws, an intricately pierced gallery and open backholing, leading to slightly raised shoulders with carved scroll motifs and flowing through to a solid D-shape shank. Marked 18 carat yellow gold, settings tested platinum, maker's mark 'F.ST' for Frederick Stone, numbered '400', circa 1905.
