Tempered Fire Essence Fragment

Worth: 23  Recipe Sold by: Uncle Kaga This item is created by Blacksmithing (2).

Tempered Fire Essence Fragment Raw Material Worth: 23 Gold Go to the Windmill Basement and use this forged Mana Stone on Bonebreaker, who is bound by the Seal of Water to attack the holy vessels.  Recipe - Tempered Fire Essence Fragment Requires Blacksmithing level 2 Raw Materials:  Refined Fire Essence Fragment ×5 Product(s):  Tempered Fire Essence Fragment

Very few Crafted items have no upgrade path, but this appears to be one of them.