Updated For 5.4 Mists of Pandaria

Gem Quality

Color Popularity Gem Quality Auction Price
Red/Blue 6 star Tense Serpent's Eye
+160 Strength and +160 PvP Power
Epic
Blue 2 star Solid Serpent's Eye
+480 Stamina
Epic
Red/Blue 1 star Defender's Shadow Spinel
+25 Parry and +37 Stamina
Epic
Yellow/Blue 1 star Puissant Elven Peridot
+25 Mastery and +37 Stamina
Epic