French Art Nouveau Platinum, Gold, Diamond, Citrine and Enamel Necklace attributed to Lucien Hirtz

A French Art Nouveau platinum, gold, diamond, citrine and enamel necklace attributed to Lucien Hirtz, featuring a large central enamel portrait of a woman, peaking out amid flowers. The triangular portrait is surrounded by platinum-set, rose-cut diamonds with an approximate total weight .75 carat, and further accented by three briolette citrines drops, hanging by a gold enameled box chain. Pictured in: Art Nouveau, by Judith Miller, page 150. Documentation.