All the top 10 giant diamond mining in Africa, mostly in South Africa. Since 1990, however, have found such a diamond, was discovered in 1888 in the south (the earliest Cullinan) Diamond is so far were found on the earth's largest (cutting ! ) Diamond. It was cut in Amsterdam, and in the British royal family jewelry processing. One of the biggest is the Cullinan Cullinan 1 I ( South African star) Until the golden jubilee year, were the world's largest diamond cut - it was discovered in 1985-545. 67 carat Cullinan I more than 15 carat Cullinan 1. Cullinan 1 Cullinan I may no longer be the biggest, but it is still the world's most expensive diamond, estimated value of about $1 billion. Attracted by the world's largest 10 diamond? You can find the same attractive price and excellent diamond ring!