Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Yellow 6 star Smooth Sun's Radiance
+320 Critical Strike
Rare
Red/Yellow 6 star Skillful Vermilion Onyx
+80 Strength and +160 Mastery
Rare
Red/Yellow 4 star Crafty Vermilion Onyx
+160 Expertise and +160 Critical Strike
Rare
Red/Yellow 3 star Fierce Vermilion Onyx
+80 Strength and +160 Haste
Rare
Red/Yellow 3 star Resplendent Vermilion Onyx
+80 Strength and +80 PvP Resilience
Rare
Yellow/Blue 2 star Piercing Wild Jade
+160 Critical Strike and +160 Hit
Rare
Yellow/Blue 1 star Regal Wild Jade
+160 Dodge and +120 Stamina
Rare
Yellow/Blue 1 star Puissant Wild Jade
+160 Mastery and +120 Stamina
Rare