Soul Pieces are used in item crafting at Estel.
- See: Estel/Crafting. Each recipe needs 5 soul pieces, a base blue item and some extra metal, cloth or leather.
Soul Pieces generally drop from dungeon bosses on Very Hard mode and higher. Though they are a very rare drop.
Soul Pieces only Drop on Very Hard and Blood Mode and with at least a S Ranking. The Drop-Probability seems to increase with a SS-Rank or SSS-Rank.