Currency

In the world of Teraurge, there are two types of currency, Krats and Adats.

Krats
Krats are the lesser currency, mostly used to buy perishable goods, like food, drinks or services. They have an appearance of brown pearls. They're created from concentrated ambient energy and randomly appear anywhere in the world. They can't be farmed, so harvesting them is not an easy thing to do. They're used for other things as well, including being eaten or used as an ingredient for medicine.

Adats
Adats are the higher currency, mostly used to obtain permanent or long-lasting things, like tools, clothes or houses. These are actually manufactured; white powder that's mined is molten and formed into smooth, white and shiny rhombi.

The difference between uses of the two currencies isn't rigid. For instance, some perishable things are seen as so valuable that they're priced in Adats, and vice versa.