The term “best diamond” can depend on a few factors like size, color, clarity, and the specific mine it comes from. That said, some of the most famous diamonds from Africa have come from countries like South Africa, Botswana, and Sierra Leone.

1. The Cullinan Diamond (South Africa) – One of the most famous and largest diamonds ever discovered. It weighed 3,106 carats before being cut into several stones, the largest of which is the Great Star of Africa, part of the British Crown Jewels. It’s hard to top this historical gem.
2. The Hope Diamond (Central Africa, though now in the U.S.) – Originally from India but most recently associated with African origins, the Hope Diamond is renowned for its rare blue color and rich history. It’s not directly mined in Africa today but has ties to the continent’s diamond trade.
3. The Lesedi La Rona (Botswana) – Found in 2015, this is one of the largest gem-quality diamonds ever discovered, weighing 1,111 carats. Its size and clarity make it extraordinary, and it was sold for over $53 million.
4. The Pink Star Diamond (South Africa) – A rare pink diamond, it was found in South Africa and sold for a record $71.2 million at auction, making it one of the most expensive diamonds ever.

Each of these diamonds is special in its own way, but the Cullinan Diamond stands out as a historical and iconic African diamond.