The Surat Diamond Bourse (SDB) is the world’s largest office space that is bigger than the Pentagon. 

It has been planned to expand and shift the diamond trading business from Mumbai to Surat

the hub of cutting and polishing diamonds, and also expand it 1. The total project cost of the Surat Diamond Bourse is Rs 3,200 crore 2

Prime Minister Narendra Modi shared the video of Surat Diamond Bourse and is expected to inaugurate the construction marvel later this year