Perfect Glimmering Huge Citrine

Perfect Glimmering Huge Citrine is a gem crafted by a jewelcrafter as a result of a proc.

Source
There is no recipe for perfect gems because they are the result of an approximately 20% proc. Gem Perfection is learned from the Gem Perfection (quest) quest. The original recipe for Glimmering Huge Citrine requires 360 Jewelcrafting to create and is taught by any grand master jewelcrafting trainer for.