WoW World of Warcraft Socketing
Burning Crusade introduces into the Warcraft universe a feature familiar to Diablo II fans. Socketting will allow players to place carved gems radiating magical properties into special socketted weapons and armor. Such gems will be obtained primarily from practitioners of the new profession, Jewelcrafting, but some may be dropped from monsters as well.
Improving upon the Socketing mechanics of Diablo, the socketing system will allow players to try out combinations in the socketing window prior to permanently placing the gem into the item. Once the gem is socekted, it will be impossible to remove it intact, but gems can be broken out of the equipment they were placed in if you decide that a new, more powerful gem should take its place.