Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Blue 6 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Blue 3 star Assassin's Serpent's Eye
+160 Agility and +160 PvP Power
Epic
Red/Blue 2 star Timeless Tanzanite
+5 Intellect and +6 Stamina
Epic