Blighted gold
A corrupted version of the blue gold that the Prydaen had traditionally used to create holy symbols, blighted gold is neither truly man-made nor natural, but instead a product of long term exposure to the necromantic perversion that permeates everything in the western lands.
The most common way to encounter blighted gold is in old pieces of jewelry or decorations worn by the undead themselves, the once-valued possessions of the original person left to fester just as much as their bodies. Due to this, it is thought that such close contact with undeath may speed up the process of corruptive conversion.
For reasons unknown to the remaining living denizens beyond the Barrier, only blue gold has suffered this particular fate, and it has become a point of pride to reclaim as many of these pieces as is possible, leading to warriors frequently wearing them as memorials to the lost.
Blighted gold has a distinctive, mottled appearance containing all of the hues of rotting flesh and does not hold a shine, no matter how often it is polished.