Lightning glass is a material created by Amshani mages by instantaneously transmuting sand to magically strengthened glass. Though tricky to work with, this material is stronger than steel and much lighter. Lightning glass is particularly prized in the construction of arms and armor used by many of Amshan's elite royal guards.
While much lightning glass is carried west from Amshan as a trade good along the Golden Path, it is usually traded in the form of worked items. Amshani smiths are mastered how to shape the substance but knowledge of their techniques has not spread widely.