As surprising as it may seem, the collections of "Monsieur," brother of Louis XIV, and of his family, have never been studied in depth. And yet, these collections of silver metalwork, jewelry, art objects, cameos, and precious stones were the most spectacular and varied of the Ancien REgime. Thanks to the generous cooperation of the OrlEans family, who granted access to its family archives, and to the research carried out by Paul Micio in France, Spain, and England, this exhaustive study traces these unique collections belonging to this important family from the Renaissance to the end of the 18th century. Featuring hundreds of images of paintings, designs, engravings, table setting plans, jewelry, silver, art objects, mounted porcelains, and hardstones, this volume will be of interest to scholars and amateurs alike and is a key reference work on French Decorative Art of the 17th and 18th centuries. It is accompanied by a CD containing 500 pages of archival material and never-before published documents.