MIBA, which is the diamond mining company of The Democratic Republic of Congo has scehduled an auction of rough diamonds on May 5 in Kinshasa, as reported by AFNS. Althoguh the suction is open for all diamond dealers across the world, there is a pre-registeration process involved. There will be a total of 338,299 carats of roughs on auction. The stones are those mined at MIBA’s Mbuji-Mayi mine.