More and more customization highlights in TERA! This time around the TERA team is talking about Enhancement Crystals and how they can give your game the edge it needs to survive. Currently, all weapons and armor in TERA have between two to four crystal sockets, with red crystals socketing into weapons and blue crystals socketing into defenses. 

Some examples the team gives for enhancement crystals in TERA include crit damage boosting crystals, crystals that give you MP when you crit from the rear, damage reduction crystals, crystals that allow you to deal more damage to knocked down opponents, and even crystals that increase your crit damage on enraged monsters! That's a lot of crystals!

Check out the full post on the main TERA website.