“Red marble” (Liassic-Dogger nodular limestone, ammonitico rosso) which was mined as a decorative stone, played an important role in the art of Central Europe and especially in Hungary in the past centuries. Quarries are known from the Gerecse-Mts. (Hungary), Adnet, (Austria), Menyháza (Romania) and Verona (Italy). Determination of the provenance of the “red marble” monuments is not feasible on the basis of petrographical methods only, because the two most typical and important Central European “red marble” occurrences (the Gerecse-Mountains, Hungary and Adnet, Austria) have the same geological age and had formed in similar environments. It is possible, on the basis of stable isotope analysis, to separate the raw material from the Hungarian and Austrian quarries; it enabled us to conduct provenance studies of archaeological objects from Hungary, Upper Hungary (present Slovakia) and Transylvania (present Romania). The results are in accordance with several historical theories, but also provide additional information on the distribution of this important artistic material.