European diplomats, speaking to reporters on condition of anonymity, called the meeting "useful," but added neither side changed its view of the issue.
The U.S. State Department said it "carefully listened" to the European proposals, and said it made clear that Iran should be referred to the U.N. Security Council for its non-compliance of previous resolutions of the International Atomic Energy agency, the U.N. nuclear watchdog.
The United States was represented by Glyn Davies, deputy assistant secretary in the State Department's European Bureau, and Undersecretary for Arms Control John Bolton. Deputy Secretary of State Richard Armitage briefly attended, department spokesman Richard Boucher said.
The Europeans were expected to make their offer to Iran next week. The incentives were expected to include imported nuclear fuel for Iran's civilian reactor in Buesher and the lifting of some economic sanctions on Iran so it can modernize its national airline.
The G8 includes Britain, Canada, France, Germany, Italy, Japan, Russia and the United States.