Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Guardian's Imperial Amethyst
+160 Expertise and +120 Stamina
Rare
Red/Blue 4 star Shifting Shadow Spinel
+25 Agility and +37 Stamina
Epic
Red/Yellow 3 star Crafty Vermilion Onyx
+160 Expertise and +160 Critical Strike
Rare
Red/Blue 2 star Shifting Imperial Amethyst
+80 Agility and +120 Stamina
Rare
Red 2 star Delicate Primordial Ruby
+160 Agility
Rare
Red 1 star Precise Primordial Ruby
+320 Expertise
Rare
Red/Blue 1 star Shifting Demonseye
+20 Agility and +30 Stamina
Rare
Red/Blue 1 star Glinting Imperial Amethyst
+80 Agility and +160 Hit
Rare