Perfect Precise Bloodstone

Perfect Precise Bloodstone 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 Precise Bloodstone requires 350 Jewelcrafting to create and is taught by any of the grand master jewelcrafting trainers for.