Enchanted Equipment Exchange
The Enchanted Equipment Exchange allows you to exchange enchantment coins for enchanted job diagram pieces.
The shop sells 1 set of 20 diagram pieces of each enchanted job type for 40 enchantment coins. It refreshes 5 times a day on the standard shop refresh schedule and can also be refreshed manually for enchanted job coins.
Obtaining Enchantment Coins
You can obtain enchantment coins via the Enchanted Quest event quest under Events > Daily Quests, from enchanted job equipment farming quests, from some story hard quests, and sometimes via other rewards.