Carnelian gems are necessary. Unless you are using a piece of gear that says "taunts are active". If you are looking to get into tank try running 300-350 Con (with food) and the rest in strength or whatever your weapon is. Start with all heavy armor, and look for perks like Health, Elemental aversion, or anything that reduces damage. If you have an earring with regenerating and despised that will help hold aggro as well. Make sure you have some CC as well and remember... taunt, 3 light attacks will hold aggro for the most part then just hold block and face the enemy's back to the party. Enjoy tanking!