A worker mounds an uncut diamond for division in a laser cutting machine at the Guangzhou Mickey Weinstock & Co Diamonds Manufacturing Ltd. diamond polishing factory in Shawan, Panyu District, Guangzhou, Guangdong Province, China on Monday, Jan. 24, 2011. China's share of global demand for diamonds is set to double as the country's economy expands more quickly than those of the world's biggest gem-buying nations, RBC Capital Markets said in October last year. Photographer: Forbes Conrad/Bloomberg via Getty Images