Trading contacts with European powers were very active during the reign of Öljeitu. The Genoese had first appeared in the capital of Tabriz in 1280, and they maintained a resident Consul by 1304. Oljeitu also gave full trading rights to the Venetians through a treaty in 1306 (another such treaty with his son Abu Said was signed in 1320). According to Marco Polo, Tabriz was specialized in the production of gold and silk, and Western merchants could purchase precious stones in quantities.