Design: Bright Crimson Spinel (Shattered Sun Offensive)

Source
This item is a reputation reward; you must be Friendly 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: Bright Crimson Spinel (The Scale of the Sands).