Heartstone
Magic stones that are effectively batteries. Color of the stones range from the more common white stones to the rare and powerful black Heartstones. The darker the color, the more energy the stone has. Reported colors of Heartstone are white, gray, red, orange, yellow, green, blue, magenta, rose, pink, slate, olive, brown, and black. Thought to be a byproduct of Jord and retain the power of The Word. Many offworld Jordians use artifacts made of Heartstone to use magic and power unique Jordian weapons.