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An Art Deco Platinum, Diamond, Enamel and Ruby Bow Brooch, Circa 1925. The elongated bow of openwork floral design set with round diamonds, round and calibré-cut rubies, and accented by black enamel. #ArtDeco #brooch

Art Deco Platinum, Diamond and Black Onyx Bow Brooch The fancy-shaped pierced stylized bow centering one old European-cut diamond approximately .85 ct., within looping ribbons edged by black onyx, set throughout with 134 old European and single-cut diamonds approximately 4.20 cts., with French import marks, circa 1920, approximately 12 dwt.

A Belle Epoque diamond-set bow brooch, by Cartier The black velvet ribbon with rose-cut diamond edging centering on an old brilliant and single-cut diamond cluster between diamond-set foliate accents, circa 1910, 5.1cm wide Signed Cartier Paris Londres New York, no. 6548