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
Red/Yellow/Blue 1 star Enchanted Tear
+6 All Stats
Rare
Red/Yellow/Blue 1 star Enchanted Pearl
+4 All Stats
Uncommon