Most are cut in India by the same companies that are cutting mined stones. CZ's are a bit different. They're a LOT easier to cut and the whole process is done by robots. That's done all over the place but the US is actually a major player here.lambskin|1388542963|3584174 said:Read somewhere that at least 92% of world's diamonds are cut in India. Wondered if the lab grown, man-made and CZs are cut there as well ?