Gem Stone Valley is a hub world in Crash Team Racing. Although it is the second hub world unlocked, it doesn't have a role in the game until all four Boss Keys are obtained. There are two race tracks in Gem Stone Valley: Slide Coliseum and Turbo Track. The player cannot access them until they get a certain amount of Relics. There is also a room where the Gem Cups can be accessed, but two Boss Keys are needed to enter and all type of Gems must be obtained to take part in the races there. The entrance to Oxide's race is here as well.