Sep 14, 2010
5 large gem stones were discovered in South Africa and they weigh up to 507 carats.
All of these gem stones were discovered in a gemstone mine in Cape Town, South Africa. The largest gemstone is a 136-carat clean white octahedral one which is as large as an orange. And also there are other four diamonds, weight up to 58 carats, 69.26 carats, 82 carats and 104 carats respectively, said James Duncan, spokesperson of Petra Diamonds Company.