Diamond coronet cluster ring. Centrally set with an octagonal step-cut diamond in an open back rubover setting with an approximate weight of 0.25 carats, surrounded by a single row of twelve round eight cut diamonds in open back grain settings with a combined weight of 0.25 carats. The total approximate diamond weight is 0.50 carats, to a geometric coronet cluster design featuring millegrain borders, an intricately pierced gallery with chenier details and open backholing, the inwardly tapering shoulders flowing through to a solid D-shape shank. Marked platinum and 18 carat yellow gold, numbered '0212', circa 1920.
