Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Glinting Tanzanite
+5 Agility and +4 Hit
Epic
Red/Yellow/Blue 6 star Nightmare Tear
+0 All Stats
Epic
Red/Blue 6 star Timeless Tanzanite
+5 Intellect and +6 Stamina
Epic
Red/Blue 1 star Assassin's Serpent's Eye
+160 Agility and +160 PvP Power
Epic
Red/Blue 1 star Sovereign Tanzanite
+5 Strength and +6 Stamina
Epic
Red/Blue 1 star Mysterious Tanzanite
+5 Intellect and +5 PvP Power
Epic
Blue 1 star Rigid Serpent's Eye
+480 Hit
Epic
Yellow/Blue 1 star Nimble Chrysoprase
+5 Dodge and +4 Hit
Epic