Cheats > Game > Cheat: 26432

Gem mode
While playing a game, quickly press Right, Left, A, B, A, B, Right, Left. You can get Earth, Air, Fire, Water, and Obsidian gems by pressing A, B, X, Y, or Black. Any other button exits gem mode. You can increase your elemental power storage and get all the Obsidians through this mode. However, it is possible you might create more gems than supported and crash the game.