Courage Gem

Courage Gems are collectibles in Phantom Hourglass. There are 20 in total and are found all over the Great Sea. Once you obtain ten, the Spirit of Courage gains power and a new ability can be used. Gaining all 20 increases the Spirit's power further.

For the Spirit of Courage, getting 10 gems lets Link shoot a beam from his sword. Getting 20 doubles the width.