Pedro Rojas's 1961 excavation of numerous stone vessels at the Huayurco site has led scholars to suspect that the Jaén region of the northeastern Peruvian Andes was an important center of early ceremonial stone bowl production. This discovery not only provided clear evidence of an independent craft technology within the ceja de selva, or eastern Andean tropical montane forest, but the similarity of these stone vessels to examples found at coastal and highland Andean sites also suggested that the Jaén region produced these vessels as a means of participating within early interregional exchange networks. Because empirical evidence of tropical forest exchange items within coastal and highland sites is difficult to obtain because of these items’ suspected perishable nature, the stone vessels represented an alternative means for understanding early Andean–Amazonian relations. Despite the importance of this discovery, little follow-up investigation has been conducted. In this article, I define the Jaén stone vessel tradition on the basis of form, design, and technology. I then review the archaeological literature on early Andean stone vessels to show how these vessels help articulate Jaén's participation within Andean interaction spheres between 2500 and 800 BC.