Japanese tsunami hit Botswana where it hurts most

Japan's markets are reputed for buying bigger higher value stones compared to the rest of the diamonds market in the world. The higher value stones are only mine at Jwaneng, the world's most valuable diamond mine.

According to a De Beers 2010 Report Japan last year consumed 11 percent of the 33.5 million carats sold worldwide. This year, De Beers had projected to up production to 38 million carats, a situation that would have seen 4.2 million carats consumed in Japan alone.