Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red 6 star Delicate Serpent's Eye
+320 Agility
Epic
Red 4 star Delicate Queen's Garnet
+50 Agility
Epic
Red/Yellow/Blue 2 star Nightmare Tear
+0 All Stats
Epic
Red/Blue 2 star Assassin's Serpent's Eye
+160 Agility and +160 PvP Power
Epic