It was added in The Burning Crusade and expanded on further in Wrath of the Lich King (Wotlk) when they increased the level cap from 375 to 450. Jewelcrafting is a primary crafting profession in World of Warcraft.
300 - 350: Required Materials for The Burning Crusade.1 - 300: Required Materials for Classic.New Gems and Prospecting Rates In WotLK.
