Archaeological excavations at the Roman-Catholic „Assumption of the Virgin Mary” Cathedral Iasi: analytical studies of metal and textile artefacts Summary. Heterogeneity, complexity, diversity, rarity are keywords that characterize heritage objects. Both for their exhaustive characterization and for the adoption of optimal conservation-restoration solutions, in order to stop the degradative processes and to ensure the stabilization, from the physico-chemical and physico-mechanical points of view, of the artifacts, it was necessary to implement some analytical strategies specific to the constituent materials to provide information regarding the morphology, composition, structure, types of degradation present. Following the analyzes carried out by X-ray fluorescence spectrometry for the metal parts, the following were identified: gold-silver-copper alloy (ring with stones, cross with stones, cross ornament fragment), gilded silver-copper alloy (ring, rosette), silver (coin), brass (studs) and brass with traces of silvering (studs). Through Raman spectrometry, the nature of the precious and semi-precious stones in some metal artifacts was established: sapphire and diamonds, for the ring with stones, topaz, for the cross ornament fragment and topaz, tourmaline, crysoprase crystal, glass, for the cross with stones. In the textile fragments with metal thread, the following were identified by X-ray fluorescence spectrometry (XRF) analysis: silver and gilded silver.