Bleue-Marine Massard is an art historian and gemmologist. She graduated from the Ecole du Louvre and holds a master degree in history. Specialised in the history of jewellery and the promotion of architectural heritage, the author aims to bring back to the public some unknown topics. She wrote a master thesis on the Royal Manufacture of diamond carving during the reign of Louis 16 and is the author of the research paper Pierre-André Jacqmin, jeweller of king Louis 15, released in the periodical L’Estampille. Fascinated by the art deco movement, her monograph is the first one dedicated to the jeweller and artist Paul Brandt, one of the most animated actors of the revival of the art deco jewellery alongside Raymond Templier, Jean Fouquet, Gérard Sandoz, etc.