Centhi is the currency used by Clokies.
The coin is small ( About one inch diameter ) with a gem in the center. The gem is a solid stone created from magic and is hard to replicate to avoid counterfeits. Clokies do not deal in change; everything in their market is a solid, round price
( I.E. No $1.5 it would always be $2).
*Centhi is also something you can earn to buy prizes from the shops. Check it out if your interested :: The BOC.