Currency on Istria

Currency in Istria revolves principally around precious metals, though certain gems and magical residue are also used for high-value or non-standard transactions.

Coinage
Coin in Istria is set to a standard based on the solid gold coin of Nordia, referred to in formal negotiations as a Nordianic Crown, but colloquially called a gold piece (gp). Other coins are broken down as follows:
 * Nordianic Coronet: Also called a copper piece (cp), this coin is in frequent use due to rampant poverty. 100 cp are equivalent to 1 gp.
 * Nordianic Tiara: Also called a silver piece (sp), this coin is used frequently as a means of saving space. 10 sp are equivalent to 1 gp.
 * Nordianic Circlet: Also called an electrum piece (ep), this coin is used sparingly due to its limited mint.  Made of a mixture of gold and silver, 2 ep are equivalent to 1 gp.
 * Nordianic Diadem: Also called a platinum piece (pp), this coin is typically only used for large-volume transactions, such as wholesale trade. 1 pp is equivalent to 100 gp.

Astral Diamonds
Astral diamonds are rare gems from the Astral Sea that are remarkably and magically uniform in size. As such, their price is currently fixed at 10,000 gp, and they are often used in transactions involving extreme wealth that exists off the radar of local governance, either between nobles who do not wish to carry absurd amounts of coinage, or when dealing with trade in illicit materials (smuggling, narcotics, slavery, etc.). They are abbreviated "ad".

Residuum
Abbreviated "res", residuum is a scarce form of currency off the radar between members of arcane communities, such as wizards, mages, and the like, as it is a natural remnant of the destruction of enchanted items, and it is essential for performing rituals and creating new enchantments. The world's source of residuum was once found in arcane mines that excavated the remnants of Bael Turath and Arkhosia, which were destroyed in a magical war that annihilated both continents. However, as predicted by leading arcane theorists the mines dried up in 256 DA, which forced society to adapt to a world with magic powered by non-residual sources. Nordia blames hypermagical races for this event and has used the residuum crisis as an excuse to genocide any political opposition.

1 res (measured in Avoirdupois drams) is equivalent to 1 gp, and can be purchased at a fixed rate from alchemists, wizards, and ritualists across Istria that managed to retain a remnant of their stores.