De Beers, the diamond jewelry company, has promoted chief operating officer Hamida Belkadi to chief executive officer of U.S. operations.
The post had been vacant since Alyce Alston left in 2007. Belkadi, who became chief operating officer in July 2007, reports to worldwide ceo Guy Leymarie. She began working for De Beers in 2005 as vice president of sales and marketing, and previously worked at Cartier for 18 years.
A Stella McCartney sketch of a custom dress made from protein-based silk in partnership with biotech lab Bolt Threads. The dress will be displayed at The Museum of Modern Art's upcoming design exhibition, "Items: Is Fashion Modern?"