Acting as the elemental card, the Gemstones are used to power up your Critters and Titan on the battlefield. There are six Gemstones: Diamond, Moon, Gold, Ruby, Sapphire, and Silver. Each element has varying effects and different properties, which interact with each other in unique ways: Diamond is stronger against Sapphire, Sapphire is stronger against Ruby, Ruby is stronger against Gold, Gold is stronger against Moon, Moon is stronger against Diamond, and Silver can duplicate the ability of another Gemstone.