The argaric site of Cerro San Cristobal is a small settlement situated in the Vega de Granada. From an habitational point of view, stand out a culturally hybrid context in which different pottery vessels typologically characteristic of Chalcolithic and Argaric period coexisted. Associated with living areas, 14 burials were located with at least 17 inhumations and grave goods in which materials traditionally considered as indicators of high social status were absent. The technological properties of the metallic grave offerings were specifically studied. The combination of metallographic, microhardness and compositional analyses question the adoption of tin-bronze alloy due to its functional improvements.