Ornamental stones

Jean de Loisy is an art historian and independent curator. Among other positions, he has been Inspector for Creation at the French Ministry of Culture, and curator at the Fondation Cartier and the Centre Georges Pompidou. He has directed and co-directed various art venues in France, including the Palais de Tokyo from 2011 to 2017 and the École Nationale Supérieure des Beaux-Arts de Paris from 2018 to 2022. From 2011 to 2022, he produced the France Culture programs Les Regardeurs and L’Art est la matière.

Pierre Adrian (France, 1991) is a writer. He published his first book in 2015, La Piste Pasolini, an initiatory travelogue in the footsteps of the Italian poet and filmmaker, for which he received the Prix des Deux-Magots and the Prix François-Mauriac from the Académie française. Pierre Adrian went on to publish Des Âmes simples (Prix Roger-Nimier), Le Tour de la France par deux enfants d’aujourd’hui (with Philibert Humm) and Les Bons garçons, also published by Les Équateurs. In 2022, her novel Que reviennent ceux qui sont loin was published by Gallimard. On its release, Marine Landrot wrote in Télérama: “Rare are writings so limpid and crafted, capable of arousing an emotion close to tears.” A journalist by training, soccer fan and cycling enthusiast, Pierre Adrian has been a columnist for L’Équipe newspaper since 2016.

Marie-Laure Cassius-Duranton is an art historian (Université PARIS I et EHESS) specializing in the Renaissance, and a gemmologist (GIA, FEEG, ING). She is an in-house teacher-researcher at L’École des Arts Joailliers. She is a member of the CNES (Chambre Nationale des Experts Spécialisés) and has worked as a consultant for auction houses. She has taught art history at university and gemmology at the Laboratoire Français de Gemmologie (LFG).