Gem relativity, enchanting

Nedding help with stats on my Frost DK. I’m considering changing my Blacksmithing profession to Jewel crafting because I already have enchanting but I am haging issues with what I need. I just got back into the game and I’m a little behind. And what gems will I need if I do need them?

Wouldn’t worry to much about gems, even the best are relatively cheap now, maybe 300g

icy-veins has a Blood DK guide

Im a frost dk

Don’t do JC, they’ve ruined the profession. Unless you’re using it to make gems for low level alts it’s utterly useless.