Augmentation Evoker DPS Stat Priority — Season 4

The general stat priority on armor pieces for a Augmentation Evoker is:

1. Item Level;
2. Mastery;
3. Critical Strike;
4. Haste;
5. Versatility.

On Jewelry (and pieces without Intellect on them), the priority is as follows:

1. Mastery;
2. Item Level;
3. Critical Strike;
4. Haste;
5. Versatility.

Intellect is by far going to give you more DPS than secondary stats, therefore Item Level will typically be better than having optimal secondary stats given that the piece of equipment also has an Intellect increase.
However, for Augmentation Evoker, Mastery is so much better than other stats that it can bridge the gap of multiple item levels. Intellect is roughly twice as good as mastery, which itself is twice as good as Haste/Crit, which is 1.5x as good as Versatility. Haste and Crit are approximately equal in value with a slight favoring of Crit.
For Augmentation it is more important for the item to just have more Mastery than any differences between Haste and Crit while having any Versatility is significantly worse.
Trinkets are an exception to this as they have other factors to consider such as how good the effect provided by the trinket is.

Whilst this is fairly generic advice for your gearing, to get more accurate information simming your character is always best to get an idea of what gear your character should use for any given combat scenario. It is important to read the caveats mentioned on the Simulations page with respect to Augmentation as there are more of them compared to simming other Specialisations. You can find this linked below:

Something to note is that secondary stats diminish in value per point after 30%, meaning it takes more secondary stat points to gain 1%. For Mastery, this begins at 5400 Mastery Stat. For Augmentation these DRs do not matter until after approximately 9000 Mastery Rating (The 3rd DR) on gear (Excluding stats from Blue Silken Lining). After which incremental gains from stats even out bringing Haste and Critical strike to approximately equal to Mastery in value per point for additional investment.

These statistics have been obtained by combining common sense, in-game testing, and simulations using SimulationCraft.

Intellect is your primary stat. You should look for this stat in all of your upgrades. It provides you with Spell Power, which increases the damage of your spells.

Mastery ( Mastery: Timewalker) causes empower spells you cast to give a DPS Shifting Sands which grants Versatility to another ally for 10 seconds. Additionally, it increases the duration of Shifting Sands, Breath of Eons, Ebon Might , and other helpful Auras.

Critical Strike increases your chance for your abilities to deal 200% damage. Sands of Time means your Ebon Might extension effects can Critically Strike, increasing the amount of extension granted by 50%.

Haste increases your spell casting speed (including Empowered Spells) and the tick rate of your periodic effects.

Versatility increases all your damage and healing done, and decreases all damage taken.