Inside the building used to contain 90% of the world's rough diamonds

The building is located in the jewelry business district of Hatton Garden, London with a full range of unique amenities, from underground diamond depots to private helipads .

De Beers Diamond Company headquarters were located at 17 Charterhouse Road since 1979. The building is like a "fortress" in the heart of London with 90% of the world's diamonds have been processed here during De Beers' heyday.When the peak period was over, the owner of De Beers, Anglo American Plc mining company, was moving out of the building according to a budget cut plan.

Souvenir stamp in De Beers' reception hall.Philip Oppenheimer (named in the picture) is the grandson of the British American founder Ernst Oppenheimer.Ersnt became De Beers president in 1929. The next successors were his son, Harry (1957) and Nicky (1998).In the monopoly period, De Beers used to store diamonds here to manipulate the market.

The rooms and corridors in this office are decorated with David Hockney's contemporary artworks, Damien Hirst . These are all gifts from De Beers' close customers.

Diamonds are stored, sorted and sold by De Beers at businesses throughout London.The building has about 10 diamond stores, the main warehouse is in the basement.

De Beers exploited 27.3 million carats of diamonds in 2016 and collected $ 6.1 billion.The company operates in Botswana, South Africa, Canada, even in the Atlantic seabed in Namibia .

Security cameras track the company's activities across the globe.The De Beers headquarters in London is considered the most characteristic symbol of the diamond manufacturing industry.

De Beers employees use computers to calculate how to handle rough diamonds most effectively.

The helipad is on the roof of the Oppenheimer family house for billionaires.

Fire fighting equipment near the exit of the helipad.