ART NOUVEAU Diamond Ruby Enamel 18k Gold Platinum Swallow Bird Necklace

This rare and collectible antique Art Nouveau necklace features a pendant of swallow bird with outstretched wings in flight crafted in platinum and 15k yellow gold and plique-à-jour enamel and accented with red ruby eyes and completed with a sparkling drop bezel-set with an old mine-cut H-I VS1-VS2 diamond weighing an estimated 0.15 carats. Made in United Kingdom circa 1900s.