Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Tense Serpent's Eye
+160 Strength and +160 PvP Power
Epic
Blue 3 star Rigid Serpent's Eye
+480 Hit
Epic
Blue 2 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Yellow/Blue 2 star Nightmare Tear
+0 All Stats
Epic
Yellow/Blue 1 star Jagged Elven Peridot
+50 Critical Strike and +37 Stamina
Epic
Blue 1 star Sparkling Stormjewel
+40 Spirit
Epic
Blue 1 star Sparkling Deepholm Iolite
+100 Spirit
Epic
Yellow/Blue 1 star Jagged Chrysoprase
+10 Critical Strike and +6 Stamina
Epic
Red/Yellow/Blue 1 star Void Sphere
+4 Resist All
Epic