Updated For 6.0.3 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Yellow/Blue 6 star Sensei's Wild Jade
+160 Hit and +160 Mastery
Rare
Red/Blue 4 star Timeless Imperial Amethyst
+80 Intellect and +120 Stamina
Rare
Red/Blue 4 star Veiled Imperial Amethyst
+80 Intellect and +160 Hit
Rare
Yellow/Blue 3 star Perfect Sensei's Alexandrite
+160 Hit and +160 Mastery
Rare
Red/Blue 3 star Mysterious Serpent's Eye
+160 Intellect and +160 PvP Power
Epic
Red/Blue 2 star Perfect Veiled Roguestone
+80 Intellect and +160 Hit
Rare
Blue 2 star Solid River's Heart
+240 Stamina
Rare
Red/Blue 2 star Mysterious Imperial Amethyst
+80 Intellect and +80 PvP Power
Rare
Red/Blue 2 star Perfect Mysterious Roguestone
+80 Intellect and +80 PvP Power
Rare