(CNN) -- Supermodel Naomi Campbell took the stand Thursday in the trial of former Liberian President Charles Taylor and said she received a gift of "dirty-looking stones" that she assumed was from him.
Campbell was handed the stones following a dinner hosted by Nelson Mandela in 1997.
"When I was sleeping I had a knock on my door. I opened the door and two men were there. They gave me a pouch and said, "A gift for you'".
The men didn't introduce themselves nor say anything else, Campbell said.
The next morning, she opened the pouch and saw a few "very small, dirty-looking stones".
She then shared what happened with her then-agent, Carole White, and actress Mia Farrow at breakfast.
"Well that's obviously Charles Taylor," one of them said. Campbell didn't recall who. Then, one of them added, "Well, obviously they are diamonds".
Asked if she thought the stones came from Taylor, Campbell said, "I just assumed that it was".
Prosecutors asked the Special Court of Sierra Leone in May to order the supermodel to testify about allegations she got a "blood diamond" from Taylor, and requested permission to reopen their case against him.
Taylor faces war crimes charges over a brutal conflict in Sierra Leone which was fueled by rough diamonds, also known as blood diamonds or conflict diamonds.
He has testified that he never handled the precious stones that fueled the conflict. CNN
