For more than a century, the high jewelry house Van Cleef & Arpels has combined exceptional know-how and technical prowess, and distinguished itself by the ingenuity and beauty of its creations. This work, the first volume of the catalog raisonné of the Van Cleef & Arpels Collection, traces the beginnings of the collection, from 1906 to 1953, highlighting nearly 700 jewels created during this period. By giving pride of place to images, this book presents the heritage collection in all its diversity: pieces of fine jewelry, jewelry, watches, as well as accessories and art objects. Detailed instructions accompany certain iconic pieces and underline the collection's place in the historical, cultural and artistic context of the first part of the 20th century. A corpus of scientific texts, written by art historians and the heads of the Heritage department of the House of Van Cleef & Arpels, evoke the creative processes, the major themes dear to the House – flora, transformability... –, as well as the artistic movements at work during this period. A book of art and cultural history, but also a reference work in the world of jewelry, this catalog raisonné revisits the codes of the genre through its plural readings, its visual and didactic approach and its graphics designed as a showcase for the Collection Van Cleef & Arpels. It places the collection in the great history of the arts.