IN a groundbreaking move that signals a new dawn for Africa's mineral wealth, Botswana and Angola - the continent's premier diamond-producing powerhouses - are joining forces to fundamentally transform the global diamond industry. This visionary partnership represents far more than a business arrangement; it is a declaration of economic sovereignty and a bold commitment to ensuring that Africa's extraordinary natural resources finally serve African prosperity. This historic collaboration marks the emergence of what could become the diamond world's equivalent of OPEC, a unified force that will give African nations unprecedented control over their own treasures. For decades, the continent's diamonds…