Spirit Gems

Spirit Gems (スピリット・ジェム, Supiritto Jemu) are the gem clusters in The Legend of the Avenge Landers series that give out red, green, blue and purple gems. They are found repeatedly throughout all regions of the series.

"A gift that speaks across generations...a gift that empowers you with the spirit of the past, strengthening you with the wisdom of the ages."
 * —Ignitus, talks about the Spirit Gems.