Bernicium was a naturally-occurring mineral found on Saowin's homeworld in the Delta Quadrant.

In 2375, Saowin's people offered bernicium to the Think Tank in return for stabilizing their planet's geology. However, the bernicium was needed to repair their replicator technology, so Saowin attempted to offer a rubidium geode instead. The Think Tank discovered where Saowin's people had hid the bernicium and threatened to deactivate their planetary containment field unless they upheld the original agreement. (VOY: "Think Tank")