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 4 star Void Sphere
+4 Resist All
Epic
Red/Blue 4 star Defender's Shadow Spinel
+25 Parry and +37 Stamina
Epic
Red/Blue 1 star Sovereign Tanzanite
+5 Strength and +6 Stamina
Epic