Updated For 6.0.2 Warlords of Draenor

Gem Quality

Color Popularity Gem Quality
Red/Blue 6 star Assassin's Imperial Amethyst
+80 Agility and +80 PvP Power
Rare
Blue 2 star Solid River's Heart
+240 Stamina
Rare
Red/Blue 2 star Shifting Shadow Spinel
+25 Agility and +37 Stamina
Epic
Blue 1 star Sparkling River's Heart
+320 Spirit
Rare
Red/Blue 1 star Shifting Imperial Amethyst
+80 Agility and +120 Stamina
Rare
Blue 1 star Stormy River's Heart
+160 PvP Power
Rare
Red/Blue 1 star Etched Imperial Amethyst
+80 Strength and +160 Hit
Rare
Blue 1 star Rigid River's Heart
+320 Hit
Rare