High jewelry houses are traditionally at the tail end of the diamond supply chain. Once they're extracted, rough stones are typically acquired by specialist diamond cutters and polishers, who analyze each stone -- sometimes for up to a year -- to determine the ideal cut in which to shape them. Only after this process are the polished gems usually presented to high jewelry houses, who set them into glittering creations.
원문출처 : http://www.cnn.com/style/article/why-jewelers-are-investing-in-rough-diamonds/index.html
원문출처 : http://www.cnn.com/style/article/why-jewelers-are-investing-in-rough-diamonds/index.html