Gems & Enchants (5.4.8)
Gems and Enchants allow you to customize your stats and choosing the right gems and enchants is critical to developing an effective Frost Death Knight. Use this guide to view the selected best gems, enchants, and profession perks to use for your Death Knight.
Engineering provides the single strongest DPS gain of any profession with its tinkers. All other professions provide the same moderate DPS gain, with the exception of Tailoring which provides the smallest DPS boost. Always use a profession perk if it is available.