Diamonds, sapphires, and even pearls adorn the G'desh Desert, but they are nothing in comparison to Lake G'desh. All the riches in the world don't matter if you're going to die of thirst.
Lake G'desh is a massive lake, hundreds of miles north to south, and a little over a hundred miles east to west. It is exceptionally deep in the center, and provides an abundance of fish, as well as other resources.
Common fish, seaweed, pearls, and other common water flora and fauna.