Socket

Socket limits depend on both slot and rarity. The native count is round(slot maximum × rarity tier / 6); the table below shows every slot at every rarity. A newly generated item already receives its calculated socket count. Adding a socket is only useful when an existing item is below its permitted count. The client add/socket/unsocket actions do not deduct gold or an extra reagent.

Inserting a gem consumes one copy from the bag or stash and requires an empty socket. Unsocket clears that position and destroys the gem; it does not return the gem to inventory. Gem bonuses depend on weapon, armor or accessory category. A Runeword requires its listed gem combination in the matching category; inspect Gems before filling a socket.