Updated For 5.4 Mists of Pandaria

Gem Quality

Color Popularity Gem Quality Auction Price
Red/Yellow/Blue 6 star Void Sphere
+4 Resist All
Epic
Red/Yellow/Blue 6 star Nightmare Tear
+10 All Stats
Epic
Red/Blue 3 star Timeless Tanzanite
+5 Intellect and +6 Stamina
Epic
Red/Blue 3 star Purified Shadow Spinel
+25 Intellect and +25 Spirit
Epic