The fleur-de-lis mark is a puzzle, but the mark on the left appears to be the maker’s mark of Émile Delaire, manufacturing goldsmith and jeweler, 20 passage d’Angoulême, registered 20 Jul 1882 and cancelled 3 Jun 1920.
See the
French Cultural Heritage Website
I would suggest searching the piece carefully for the “Minerva Head” mark. Very intriguing.