Resonite is a lustrous, dark purple ore found most commonly in the Resonant Mines. The ore is capable of exerting magical pressures on its surroundings, making it difficult to cast magic in close proximity to rich deposits. The ore can be refined into resonance gems. Much like how the similar poles of two magnets repel, the magical pressures of two resonance gems forced together can create motion.
Perhaps the most important technology developed since the Rising is the resonance engine, invented by Artifex Calligo in 756 PO to propel Ingenium toward Fundus. Resonance engines use the magical properties of resonite to create kinetic energy. Resonance engines are used in machines such as automobiles, aircraft, power generators and even rail guns. Some have even theorised that the heart used to power Mundi Eversor was a prototype resonance engine on a colossal scale. As such, trade of the mineral is strictly regulated.