What is $1 GRT?

Excuse me, could you possibly elaborate on what exactly $1 GRT represents? I'm a bit unfamiliar with the terminology and its significance in the cryptocurrency realm. Could you possibly explain its value, purpose, and how it fits into the larger financial landscape? Additionally, is there any specific use case or application where $1 GRT finds particular utility? I'm quite curious to learn more about this cryptocurrency and its potential impact in the finance world.