A diamond 'colibri' bird of paradise hatpin, by Van Cleef & Arpels, circa 1921, FOOTNOTES In the 1920s Van Cleef & Arpels made a series of brooches and hat pins in the form of exotic birds set with rose-cut diamonds in platinum, some with detachable natural feathers, c.f. Editions Paris-Musées, Van Cleef & Arpels, Paris 1992, p.154, catalogue no.237 Oiseau de Paradis clip, 1927, and no. 238 Colibri clip, 1925.
