Currently using leaderboard data from Level 100, which is still relevant when evaluating what is effective at 110. Statistics will be updated using level 110 players when Legion matures and more players are playing competitively in PvP at 110.
Blood Death Knight PvP Gems and Enchants - 7.1.5
These guides are based on an automatic system, using statistics from PvP Leaderboards to make guide recommendations. We only use statistics from high-rating, competitive PvP players. Unfortunately, our system has flagged the statitiscs for this guide as incompetent. There is currently not enough Blood Death Knight players in the competitive end-game of PvP to create reliable recommendations with.
When enough Blood Death Knight players are competitive and the statistics are available, then this guide will automatically update!
Other Death Knight Specs
In the meantime, we highly recommend you consider playing a different Death Knight spec for PvP. Check out the noxxic PvP Rankings to see which specs are currently the most viable.