Updated For 5.4 Mists of Pandaria

Gem Quality

Color Popularity Gem Quality Auction Price
Red/Yellow/Blue 6 star Nightmare Tear
+10 All Stats
Epic
Blue 3 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Blue 3 star Tense Serpent's Eye
+160 Strength and +160 PvP Power
Epic