Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Yellow 6 star Artful Vermilion Onyx
+80 Intellect and +160 Mastery
Rare
Red/Yellow 4 star Willful Tiger Opal
+60 Intellect and +60 PvP Resilience
Uncommon
Red/Yellow 3 star Perfect Willful Tiger Opal
+80 Intellect and +80 PvP Resilience
Rare
Red/Yellow 2 star Reckless Vermilion Onyx
+80 Intellect and +160 Haste
Rare