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/Blue 4 star Mysterious Serpent's Eye
+160 Intellect and +160 PvP Power
Epic
Red/Blue 2 star Purified Tanzanite
+5 Intellect and +8 Spirit
Epic
Red/Blue 2 star Timeless Tanzanite
+5 Intellect and +6 Stamina
Epic
Red/Blue 2 star Purified Tanzanite
+5 Intellect and +4 Spirit
Epic
Red/Yellow/Blue 2 star Void Sphere
+4 Resist All
Epic
Red/Blue 2 star Mysterious Tanzanite
+5 Intellect and +5 PvP Power
Epic
Red/Yellow/Blue 2 star Nightmare Tear
+0 All Stats
Epic