Science· Nantes
Journée Conférences gemmologiques
This is a day-long event of gemmology conferences organized in collaboration with the association "Gemmologie et Francophonie," with Boris Chauviré as the contact person.
This is a day-long event of gemmology conferences organized in collaboration with the association "Gemmologie et Francophonie," with Boris Chauviré as the contact person.