From Grand Fantasia Wiki
Certain Hunting class materials, such as Fire Dragon Wing Claws, can only be obtained by building Reputation points with the Treasure Appraisal Committee. To do so, you will have to complete special repeatable quests that your Sprites may give you after a round of Hunting. These look like green glowing scrolls, and after completing them, can be turned in to Treasure Appraisal Committee Cashier: Andre in Kaslow. To complete them, you will simply need to collect whatever raw materials they require.