Soul Gems are collectible items scattered throughout Skylands in the console versions of Skylanders: Spyro's Adventure. Every chapter has at least one or two of these gorgeous purple gems somewhere in the level. Acquiring them earns you no money, no health, and no experience. There is one Soul Gem per Skylander, and once found, they unlock a special upgrade for the character they represent and also show previews of that Skylander depending on the game platform of Skylanders you have.