Sungold is a special form of gold that can only be obtained by completing a quest for the solar Incarna. Sungold does twice as much damage to creatures vulnerable to gold. Unlike normal gold, it increases the Gnosis of the user rather than decreasing it.
It is extremely hard to obtain and only the greatest of Garou will be found worthy of an item made of it. Helios will punish unworthy Garou for misusing the substance.