As part of the investigation, the "Tavernier Blue" diamond was also reconstructed from the original French edition of Tavernier's "Voyages" (rather than the later London edition that somewhat distorted and modified Tavernier's original figures), and the Smithsonian Institution provided ray-tracing and optical spectroscopic data about the Hope diamond. These events culminated in an event and a documentary to celebrate the making of these replicas, with celebrations by the French museum including H. Horovitz, Martin du Daffoy who was the historian and jeweller from the Place Vendôme in Paris, as well as directors and leaders from the museum. The event was filmed by Gédéon programmes for a documentary on the French Blue diamond, to be presented by 2011 worldwide.