Crafted from the coarse hide and ivory of Shah Neshen and quenched in his acid.
Item Sclerite Tusk can be crafted on Forge tier II. You need 1000 of Sandwurm Materia. In results you get 1 of Sclerite Tusk with 625 gearscore. For crafting required Weaponsmithing skill with level 1 or higher.