Gemming for Survival

In the Burning Crusade, gems for hunters went as such - Agi, Agi, Agi.

In the world of Wrath, where the old be-all-reign-all spec was BM, and where pet attack power scaled with its owners', BM hunters were encouraged to gem for Attack Power. Trueshot Aura now scaled to 10% of AP instead of giving just a flat 120.

Gemming for Survival is easy. If you're a BC-baby like me, you won't have any problems. Just keep stacking Agi gems like you used to. Spread out into other gems for Metas and socket bonuses if you must, but Agi conquers all.

Why? Agility is the reigning stat for Surv hunters. In BC, there used to be a minimum amount of Agi you needed before you could spec Surv to raid.

Expose Weakness grants 10% of our Agi in a fight whenever we have the buff up. (And if you have a decent amount of crit, it'll be up at least 98% of the time in boss fights) Agi contributes to Crit, which is what Surv is all about. Agi scales with Kings.

You could gem for Crit of course, but it's highly inadvisable and just plain silly.

Here's a list of gems that have Agi as a stat on them. I'll only include Wrath blue-quality ones here, since the BC gems are pretty much irrelevant now. If you want to look for the BC-era (or Wrath green-quality) gems, just plug in the name of it (eg. Delicate for Agi gem) into a search engine like Wowhead.

Red
Delicate Scarlet Ruby

Orange
Deadly Monarch Topaz (personal fav)
Deft Monarch Topaz
Glinting Monarch Topaz
Lucent Monarch Topaz

Purple
Shifting Shadow Crystal
There is supposed to be a blue-quality version of this gem... except Blizz apparently forgot to put it in the game. The best avaliable now is of course the Perfect version of this.

And finally, the gem that I really wish they didn't make - Tenuous Twilight Opal. I can understand Enhancement Shamans or maybe Ret Paladins wanting it, but with the ability to regen mana whenever we want (Viper!), I really don't think its a wise choice of gem for any hunter. And especially for Surv, where we get AP from Stam.

HUNTERS SHOULD NEVER STACK MP5.

Thank you.