Embellish Object

Cast an illusion on a small object, to make it appear more valuable than it is. The illusion does not change anything other than it's appearance. It can make an object look clean but not be clean. It can change how the face on a coin looks but not how it feels. 

Spell ends if you break concentration. If the object is examined you must make a Intelligence save. The illusion disperses on a failed Intelligence save. On a successful save the illusion stays until you break concentration. So when you leave the room.