Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Purified Imperial Amethyst
+80 Intellect and +160 Spirit
Rare
Red 3 star Brilliant Primordial Ruby
+160 Intellect
Rare
Red/Yellow 2 star Reckless Vermilion Onyx
+80 Intellect and +160 Haste
Rare
Red 2 star Perfect Brilliant Pandarian Garnet
+160 Intellect
Rare
Red/Yellow 1 star Potent Vermilion Onyx
+80 Intellect and +160 Critical Strike
Rare