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Languages: English. You can get in touch with Hugh by emailing h.cameron@newsweek.com Diamond prices worldwide continue to decline amid a global luxury market slowdown and competition from lab ...

"It's a bad time to buy a diamond," a Hatton Garden jeweller told The Guardian this weekend. "They'll probably be cheaper in a few weeks." The price of a one-carat natural diamond has dropped from ...

1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, China 2 Sichuan Geophysical Company of CNPC Chuanqing Drilling Engineering Company ...