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 5 star Sparkling Serpent's Eye
+480 Spirit
Epic
Blue 4 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Yellow/Blue 2 star Nightmare Tear
+0 All Stats
Epic
Red/Blue 1 star Tense Serpent's Eye
+160 Strength and +160 PvP Power
Epic