Fireash

Firekeeper-produced ichor coinage--colloquially referred to as fireash--is a common type of physical currency.

Gimyndine can't be manipulated with firekeeping techniques, and the signature of fireash can be easily recognized. Moreover, reproducing fireash with the signature of another is currently thought impossible. This does present the problem of needing a trusted signatory to standardize the currency, who will eventually die or otherwise need to be replaced, but so long as proper care is taken to encourage recycling, this is an inconvenience at best.

Fireash is manufactured into standard-size coins of varying shapes, in such a way that larger denominations cannot be produced by subtracting from smaller ones. This is sufficient to limit forgery, as fireash is easily carved and sanded, but few methods of melding it exist.

Often multiple signatories will assist in coin production, which further compounds the difficulty of reproductive forgeries. This also limits the exploitability of the process, eases transitions, and helps with volume demands for such high turnover.

The final signature on fireash is referred to as the gestalt, and financial institutions are issued identity samples of currently accepted gestalts (often the current one, and one or two past ones, depending on how much currency is in circulation in the town.)

The symbol for the currency is Æ. I.e., an apple might cost 2 Æ, or 2 ash.

In Gimyndine Cultures

In gimyndine-based societies, the process is much simpler, as the sign of coinage can be tied to a physical, specific sample. However, weaker gimyndine samples have a much weaker presence, and also can fail to meet generation requirements, so often a mint's signatory stone will be notably strong.