Design: Royal Shadowsong Amethyst (The Scale of the Sands)

Design: Royal Shadowsong Amethyst is a reputation reward; you must be with The Scale of the Sands to purchase it for  from  in Hyjal Summit.

Related Sources
The Shattered Sun Offensive also sell a version of this design. See Design: Royal Shadowsong Amethyst (Shattered Sun Offensive).