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
Yellow/Blue 2 star Turbid Elven Peridot
+50 Spirit and +25 PvP Resilience
Epic
Blue 2 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Yellow/Blue 1 star Nightmare Tear
+0 All Stats
Epic
Red/Blue 1 star Glinting Tanzanite
+5 Agility and +4 Hit
Epic
Red/Blue 1 star Timeless Tanzanite
+5 Intellect and +6 Stamina
Epic