Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Yellow/Blue 6 star Nightmare Tear
+0 All Stats
Epic
Red/Blue 3 star Glinting Tanzanite
+5 Agility and +4 Hit
Epic
Red/Yellow/Blue 2 star Void Sphere
+4 Resist All
Epic
Red/Blue 2 star Purified Tanzanite
+10 Spirit and +5 Intellect
Epic
Red/Blue 2 star Mysterious Serpent's Eye
+160 Intellect and +160 PvP Power
Epic