Glass jewellery believed to have been made by Roman craftsmen has been found in an ancient tomb in Japan, researchers said Friday, in a sign the empire's influence may have reached the edge of Asia. Tests have revealed three glass beads discovered in the Fifth Century "Utsukushi" burial mound in Nagaoka, near Kyoto, were probably made some time between the first and the fourth century, the Nara National Research Institute for Cultural Properties said.