I'm proposing the inclusion of Silversheen (described here) as a special material.
In part because I've already rolled for a weapon with it in the Mystic Pearl (got ahead of myself there), but I chose it essentially because it stands out as an alchemical equivalent to stainless-steel.
Start Date: 6/21/2012
Zhen Yu (Korsakovia)
Encounter XP: 200; Encounter GP: 0
level x - date (0 starting xp + x encounter xp + x time xp =x xp) level xtime gp = x gp
total time xp = x; total time gp = x
total xp = x; total gp = x