What is Art Nouveau
Art Nouveau is a late 19th and early 20th Century style of art that
found its way into jewelry. It is generally depicted as curved, flowing, assymetrical forms, recurring and intertwining as leaves, flowers and insects.
There were several renowned designers that were famous for art nouveau jewelry designs.
Louis Comfort Tiffany
Medusa pendant by René Lalique, via Gazette Drouot