Corusca gems were mostly valued for their beauty. The way that light reflected inside a Corusca gem would make it seem as if it had a furnace within it. As a result, there were many Corusca gem fisherman, such as Bash Fateau, who made a living out of collecting the gems. Corusca gems were some of the hardest objects known to the galaxy, and had industrial as well as decorative applications. Large Corusca gems were mounted on drills and used for precision drilling when explosives could not be used.