Atlantean Artifact

Based on actual findings from an uncited source.
The man who found it claimed it to be proof of Atlantis and eagerly showed it to his colleagues. The strange transparent substance that filled it, he said, wasn't any fluid but crystal. Yet the microscopic ball-bearings flowed through it with ease. What was it? Some form of stellar calendar, a computer, or an elaborate hoax? You decide.
Rendered in Truespace 3.2.