First of all, South Africa is only a diamond producing area, because a large number of diamond deposits have been discovered there and have been exhausted in the last two years. Secondly, the quality of diamonds does not depend on the place of origin, but on the color, purity, size and cutting of diamonds. I won't go into details. There is a lot of 4c-related knowledge on the Internet, so you can take your time. Finally, those merchants who say they are South African diamonds are just gimmicks. You can ask them for written proof and see how to prove that their diamonds are from South Africa. These unverifiable things are just propaganda means of merchants and are not credible.