This is the untold story of the the biggest diamond heist in history
The vault was thought to be impenetrable. It was protected by 10 layers of security, including infrared heat detectors, Doppler radar, a magnetic field, a seismic sensor, and a lock with 100 million possible combinations. The robbery was called the heist of the century, and even now the police can’t explain exactly how it was done.

Notarbartolo reflected on his interactions with the diamond dealer, and a thought flashed through his mind: Maybe the dealer wasn’t operating alone. If he tipped off a group of his fellow merchants, they could have pulled their inventory out of the vault before the heist. Each could then claim that their gems were stolen and collect the insurance while secretly keeping their stones. Most had safes in their offices—they could have simply kept the stock there. Notarbartolo realized that the heist he had spent so much time planning might have actually been part of an elaborate insurance scam.