Session XXXIV-6 of the XVIII UISPP World Congress (4-9 June 2018, Paris, France): 'Stone in Metal Ages' was divided in two parts. The first, 'Late stone talks: Lithic industries in Metal Ages', was concerned with knapping. The papers dealt with lithic technology, use-wear analyses and the relation between the decline of stone and the development of metallurgy. The second, 'Let there be rock and metal: l'outillage en pierre des metallurgistes prehistoriques de la mine a l'atelier', was designed for papers focussing on stone tools used for metallurgy. This publication combines these two parts. Despite the fact that metal took the place of stone in many spheres, the analysis of lithic products created during the Metal Ages has seen progressive development. Objects and tools made of flint, chert and other stone materials remain important components of the archaeological record, and their study has offered new perspectives on ancient societies. Not only have many aspects of the everyday life of ancient people been better understood, but the socioeconomic and cultural systems associated with the production, circulation and use of stone tools have offered new information not available from other realms of material culture.