I thought I might have to pass on this one. I've never been to Africa, never felt a particular interest in it, never given it any thought. Then I remembered that I have read and enjoyed a number of books from the series written by Alexander McCall Smith, set in Botswana. He portrays the Batswana as peaceful, polite, gentle and perfectly charming.
See those Botswana diamonds? They aren't really. They are swarovski crystals. I did, however, find a few fine specimens of Botswana agate (found nowhere else in the world) in my gem/mineral collection and hope to work those in somehow.