Craft a Jewel with four mods using an Orb of Alchemy.
An Orb of Alchemy is a currency item that can be used to upgrade a piece of normal equipment to rare.
Jewels are items that can be placed into allocated jewel sockets in the passive skill tree, and can be removed or replaced at no cost. They grant certain buffs and abilities. Like most other items, jewels can be modified by orbs and are available in the four rarities. A rare jewel can have only four affixes instead of six.