Design: Luminous Pyrestone (Shattered Sun Offensive)

The Design: Luminous Pyrestone was a reputation reward; you had to be with Shattered Sun Offensive to purchase it for  from  on Isle of Quel'Danas or  in Shattrath City.

Related Sources
The Scale of the Sands also sell a version of this design. See Design: Luminous Pyrestone (The Scale of the Sands).