Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Purified Imperial Amethyst
+80 Intellect and +160 Spirit
Rare
Red/Yellow 2 star Perfect Reckless Tiger Opal
+80 Intellect and +160 Haste
Rare
Red/Yellow 2 star Potent Vermilion Onyx
+80 Intellect and +160 Critical Strike
Rare
Red 2 star Perfect Brilliant Pandarian Garnet
+160 Intellect
Rare
Red/Blue 2 star Perfect Purified Roguestone
+80 Intellect and +160 Spirit
Rare
Red/Yellow 1 star Keen Vermilion Onyx
+160 Expertise and +160 Mastery
Rare
Red/Blue 1 star Timeless Nightstone
+15 Intellect and +23 Stamina
Uncommon
Red 1 star Brilliant Primordial Ruby
+160 Intellect
Rare
Red/Yellow 1 star Perfect Artful Hessonite
+18 Intellect and +35 Mastery
Uncommon
Red/Yellow 1 star Artful Hessonite
+15 Intellect and +30 Mastery
Uncommon