This is a unique crystalline mineral found solely on Akrul. It does not have an official name, known simply as "the Unbreakable" or “Shatterproof” among its people. These extraordinary crystals are characterized by their unique self-repairing properties and interlocking structural formations.
The crystal's unique molecular structure allows it to absorb and distribute force evenly throughout its matrix, preventing catastrophic failure even under extreme stress. When damaged, the crystal's lattice automatically reorganizes itself at the molecular level, effectively "healing" any structural compromises. This self-repairing capability makes it one of the most resilient materials known in the documented universe.
The crystal's molecular bonds begin to weaken at temperatures exceeding 3,400°F (1800°C), making it malleable enough to be shaped and forged. The Akrulans discovered this property early in their technological development, which allowed them to craft structures from this otherwise indestructible material. Once cooled, the crystal returns to its impervious state, retaining its self-repairing properties.