Adornments made from sericite and other micas are found mainly in funerary contexts across the northwestern quadrant of France. The analysis of such contexts shows that these objects were used over a long time, as they appear in individual burials dated back to the end of the early Neolithic period, but especially in those contexts belonging to the middle Neolithic 2 period, where they are found in passage graves and even in the tombs with vestibules of the late Neolithic period. Even when the spatial clustering, as well as the identification of roughouts and the presence of vein deposits of this raw material, suggests that the production of sericite adornments was well circumscribed to the Loire-Atlantique, their distribution reaches a radius of 300 km. Furthermore, these ornaments are a very fine example of a good substitute for those objects made from Iberian variscite and turquoise. However, these adornments are not confined to northern France, as evidenced by our first inventory; thus, this type of mineralisation was also used by other western European communities (Switzerland, northern Italy, southern France, Spain and Portugal) as a raw material for making ornaments, the communities among which, we now try to discuss the possible interactions.