Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Kasai-Oriental is one of the ten provinces of the Democratic Republic of Congo. It borders the provinces of Kasai-Occidental to the west, Équateur to the northwest, Orientale to the northeast, Maniema to the east, and Katanga to the south. Kasai-Oriental is one of the richest diamond producing regions in the world. The provincial capital is Mbuji-Mayi. Following the 2005 Constitution, Kasai-Oriental was to be divided into the three new provinces within 36 months: Kasai-Oriental, Lomami, and Sankuru. As of October 2010, this had not taken place.