Gustuv Lansdown tells you, "You want to cast Creature Enchantment spells without the use of a focus? Go to Fiun Rehlyun on the Halaetan Islands. Bring me a blank augmentation gem and I'll see if I can help you out."
You give Gustuv Lansdown Blank Augmentation Gem.
Gustuv Lansdown tells you, "hen you use this gem, you will no longer require a focus to cast Creature Enchantment spells. Read the gem's description before you use it though."
Gustuv Lansdown gives you Infused Creature Magic.
The FOCI that this Gem replaces is the blue "Foci of Enchantment"