Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Mysterious Serpent's Eye
+160 Intellect and +160 PvP Power
Epic
Blue 3 star Rigid Serpent's Eye
+480 Hit
Epic
Red/Yellow/Blue 2 star Void Sphere
+4 Resist All
Epic