Insightful Earthstorm Diamond (Recommended)
This the most popular choice among resto shaman because it has easy gem requirements and extra mana never hurts. You could have as little as Royal Nightseye x2 and Luminious Noble Topaz x2 and meet the requirements. Secondary colors (purple, orange, green) count for BOTH primary colors.
It procs off any spell cast, including totems and water shield. You then gain 300 mana from “Mana Restore.†The tooltip says it has a 2% chance to proc. However, both Wowhead and Thotbot list the proc rate as 5% and WWS data from raids would indicate that the proc rate is higher than 2%. There is no cooldown. On rare occasions, it has procced off itself.
In real raid situations using mainly Chain Heal, it returns about 20 mp5 (which would be roughly a 4% proc rate). Shaman may get more procs off the meta gem than others healers due to the fact that we are constantly dropping totems and casting water shield -- all of which can proc the gem.
Assuming it takes 3.0 seconds to cast Chain Heal given reaction time and lag, here are the mp5 values for various proc rates:
Quote:
2% = (300 mana / (50 casts * 3.0secPerCast)) * 5 seconds = 10 mp5
4% = (300 mana / (25 casts * 3.0secPerCast)) * 5 seconds = 20 mp5
5% = (300 mana / (20 casts * 3.0secPerCast)) * 5 seconds = 25 mp5
Mystical Skyfire Diamond This is another popular gem among resto shaman. Its requirements are also easy to meet. However, the benefit can be hit or miss. If you get the proc right when the tank is about to go down, it’s a life saver. If it comes at a time when no one is taking damage or doesn’t need a heal more quickly, it’s wasted. If you like this meta gem, you will also like the
Scarab of the Infinite Cycle The gem has a 15% chance to proc and it will proc off anything, including totems and water shield. When it procs you gain “Focus†and have 6 seconds to cast your next spell before you lost the buff. There is a 45 second cooldown since Patch 2.3. In real raid situations it will proc about once per minute.
You may want to try to get two helms. Socket your primary helm with the Insightful Earthstorm. Socket the second helm with the MSD and use it whenever you have a shadow priest. This is also an excellent gem to include as part of a spell haste set for when you have a shadow priest.
On PTR, it gives 320 spell haste for 6 seconds. 45 second cooldown remains
Bracing Earthstorm Diamond This is the least popular among healing meta gems. Most healers would rather than 20 mp5 than 26 +healing. The reduced threat has limited benefit in 25-man raids. In Patch 2.3.2, the requirement of having more yellow gems than blue gems was eliminated.