Alphonse Ilunga, a Hokam diamond buyer, makes his calculations in a room on the outskirts of Mbuji-Mayi, Lupatapata, in the Democratic Republic of Congo, on April 30, 2021. - The town of Mbuji-Mayi, in the central province of Kasai-Oriental, prospered under the wing of the Bakwanga mining company (MIBA), flagship of the region's economy until the end of the 1990s, when it was dubbed the DRC's "diamond capital". (Photo by Arsene Mpiana / AFP)