Updated For 5.4 Mists of Pandaria

Gem Quality

Color Popularity Gem Quality Auction Price
Yellow 6 star Smooth Serpent's Eye
+480 Critical Strike
Epic
Yellow 4 star Fractured Serpent's Eye
+480 Mastery
Epic
Red/Yellow/Blue 3 star Nightmare Tear
+10 All Stats
Epic
Red/Yellow/Blue 2 star Void Sphere
+4 Resist All
Epic
Red/Yellow 2 star Resplendent Serpent's Eye
+160 Strength and +160 PvP Resilience
Epic
Yellow/Blue 1 star Jagged Chrysoprase
+6 Stamina and +5 Critical Strike
Epic
Yellow 1 star Fractured Lightstone
+50 Mastery
Epic
Yellow 1 star Kharmaa's Grace
+20 PvP Resilience
Epic
Yellow/Blue 1 star Puissant Elven Peridot
+25 Mastery and +37 Stamina
Epic
Yellow 1 star Quick Serpent's Eye
+480 Haste
Epic
Yellow 1 star Smooth Lightstone
+50 Critical Strike
Epic