Diamonds A to Z - The Diamond Industry - Photiusthe primary diamond processing centers, where they are evaluated, cut and sold . Unlike precious metals such as gold or platinum, gem diamonds do not trade.gold and diamond processing industries,The Billion Dollar Business of Diamonds, From Mining to RetailAug 27, 2012 . Like the gold business, the diamond business is segmented into several groups: . It's a costly process: most rough diamonds lose 50 to 60 percent of their . Like gold , the diamond industry has had high expectations for.
gold and diamond processing industries