Namibia has the richest known marine diamond deposits in the world and is among the top 10 producers of gem quality diamonds globally. The journey of offshore marine diamonds started billions of years ago when volcanic activity sent diamonds into the riverbed of the great Orange River, which over millions of years washed the diamonds into the Atlantic Ocean. Debmarine Namibia is Namibia’s leading marine diamond mining company and is a recognised world leader in marine diamond exploration and mining technology. Debmarine Namibia is a joint venture marine diamond prospecting and mining company, owned in equal shares by the Government of the Republic of Namibia and De Beers. Debmarine Namibia is a wholly-owned subsidiary of Namdeb Holdings (Pty) Ltd.