René Lalique Art Nouveau Gold, Opal and Enamel Hat Pin Topped by one oval collet-set opal ap. 22.0 x 11.5 x 3.0 mm., within a flared frame of rose-cut diamonds, flanked by scrolled ribbons applied with turquoise and cornflower blue and sea green enamel, signed Lalique, with maker's mark and French import mark, circa 1895-1897, minor enamel loss. Total length 6 3/8 inches. Reference: René Lalique 1890-1910, Schmuck und Objets d'art, 1890-1910, Sigrid Barten, page 474, illustration 1379. C Property from an Important Jewel Collector