Hazel cast a cold glance at him. The diamonds were either swapped in the lab or on the way to the vault. Therefore, the security guards, the vault keeper and the inspection department were all involved in this case.
The only person who could be suspected was director Liu of the marketing department. She purchased the diamond from the market department in a normal way. If director Liu knew that it was a fake diamond and sold it to the CEO, he must be insane or detestable.
"We had checked everything in the lab before the diamonds were conveyed into the warehouse. How could it be fake?" Asked Grin, confused.