Other assets include jewelry company Graff Diamonds International, a polished diamond trading company in Antwerp, a real estate company in Luxembourg and a stake in a South African diamond wholesaler.

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In his sights is a status unrivaled in the raw materials sector since Cecil Rhodes held sway over much of southern Africa in the 19th century through the diamond trading company he founded, De Beers.

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Other assets include a polished diamond trading venture in Antwerp, a real estate company in Luxembourg that holds properties in London's tony Mayfair district, and a stake in a South African diamond wholesaler.

FORBES: Laurence Graff

Gross margin took a hit on high metal and diamond costs, but the company delivered solid guidance, helping the stock rally in early trading.

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