Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Yellow 6 star Adept Vermilion Onyx
+80 Agility and +160 Mastery
Rare
Red/Yellow 4 star Deft Vermilion Onyx
+80 Agility and +160 Haste
Rare
Red/Yellow 1 star Deadly Tiger Opal
+60 Agility and +120 Critical Strike
Uncommon
Red/Yellow 1 star Adept Tiger Opal
+60 Agility and +120 Mastery
Uncommon
Red/Yellow 1 star Deadly Vermilion Onyx
+80 Agility and +160 Critical Strike
Rare
Red/Yellow 1 star Adept Ember Topaz
+20 Agility and +40 Mastery
Rare
Red/Yellow 1 star Lucent Lava Coral
+25 Agility and +25 PvP Resilience
Epic
Red/Yellow 1 star Perfect Deadly Tiger Opal
+80 Agility and +160 Critical Strike
Rare