Introduced December 14th update as a new synergy recipe (Link: http://forum.square-enix.com/ffxi/threads/18132-December-14-2011-Version-Update). Durium chain (2 Durium ingot - Fire crystal) and Ruszor leather. Unable to synergize as 100 Smithing 60 LC. Able to synergize at 100 LC 70 Smithing.