Green objects of personal adornment were quite common among Neolithic and Copper Age groups in Western Europe, and variscite was one of the minerals that was most often used for such a purpose. This article presents the results of a series of archaeological campaigns designed to study the mines of Aliste and the ornament production loci of Quiruelas de Vidriales (both in the province of Zamora, Spain). We discovered that initially, during the fourth millennium cal BC, variscite from Aliste was seldom used and the ornaments’ production was dispersed, but that there was a significant shift during the third millennium cal BC: ornament production intensified and became concentrated in the production sites of Quiruelas. We relate this transformation to the socioeconomic processes that developed in the Iberian Peninsula and the growth of supra-regional socio-technical artefact exchange networks.