|List of all weapons & other items|
Fredrillium Stone is a rare ruby colored gem. This foot-long crystal can only be found in the Caves of Condus which are located on New Thundera. Now much is known about these rare stones including their physical properties, chemical make-up and uses if any.
Once when Panthro and some of the other ThunderCats returned from their exploratory trip to New Thundera, they brought presents for the ThunderCats who couldn't accompany them. One of those presents was the Fredrillium Stone which Panthro presented to Lion-O.