Diamond valley was the crown jewel of Itholan before the Thusians conquered the Island. This small valley was named after its famous diamond mine. The name influenced the architects to build most of the buildings in the shape of a diamond. The city itself was bordered by a forest to the North, a large, frozen lake to the South, luscious grass fields to the East, and graceful mountains to the West. The people of diamond valley mainly lived off working in the diamond mine and crafting jewels using the diamonds they produced.