A recent discovery may prove that the Roman Empire was more influential than previously believed. Three Roman glass beads have been unearthed in a 5th century Utsukushi burial mound in Nagaoka, Japan. (photo)
Tests by experts from the Nara National Research Institute for Cultural Properties show that the "light yellow beads were made with natron, a chemical used to melt glass by craftsmen" in the Roman Empire. The multilayered process was used by Roman craftsment in the 1st through 4th centuries.