Aknashen (formerly called Khatunarkh) is a small Neolithic village of the Ararat Valley located 25 kilometres away from Yerevan (capital of Armenia) and 5 km southwest of Echmiadzin (Vagharshapat). Aknashen is also located only 6 km from another Neolithic village that is contemporary named Aratashen, a site for which we recently published a technological study of the obsidian industry. Excavations have been taking place each year since 2004 at Aknashen. Concerning the lithic material, we identified two main chaînes opératoires on obsidian, which is an abundant raw material in this region: 1) one concerns expedient tools made on flakes; and 2) the other one is related to regular blades. After a brief account of the different obsidian sources used by the inhabitants of Aknashen, our presentation will focus on new research results on the technology of the blade industry obtained by three knapping techniques: standing up pressure with a crutch; pressure with a lever; and indirect percussion. A systematic study of this material makes it possible to recognize the techniques used, but also to observe the great level of know-how of the specialists who carried out this work. However, since the identification of this high level of skill is important to discover from a pure technological point of view, the recognition of pressure with a lever can also constitute an excellent cultural marker. Therefore, it can help to characterize Neolithic cultures that are involved with this technique, document exchanges (trade networks) and possible movements of population or contacts between them, as well as transmission of knowledge.