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/Blue 2 star Glinting Imperial Amethyst
+80 Agility and +160 Hit
Rare
Red/Blue 2 star Shifting Imperial Amethyst
+80 Agility and +120 Stamina
Rare
Red/Blue 1 star Mysterious Imperial Amethyst
+80 Intellect and +80 PvP Power
Rare
Red/Blue 1 star Assassin's Imperial Amethyst
+80 Agility and +80 PvP Power
Rare
Red/Blue 1 star Sovereign Imperial Amethyst
+80 Strength and +120 Stamina
Rare
Red/Yellow/Blue 1 star Enchanted Tear
+6 All Stats
Rare
Red/Blue 1 star Purified Roguestone
+60 Intellect and +120 Spirit
Uncommon
Red/Blue 1 star Perfect Assassin's Roguestone
+80 Agility and +80 PvP Power
Rare