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
Red/Yellow/Blue 2 star Void Sphere
+4 Resist All
Epic
Yellow/Blue 1 star Shattered Elven Peridot
+25 Haste and +25 PvP Power
Epic
Yellow/Blue 1 star Radiant Elven Peridot
+25 Critical Strike and +25 PvP Power
Epic