Prestigious New York jeweller Lorraine Schwartz told a US court that she secured a US$23 million (RM97 million) deal to sell Rosmah Mansor a 22-carat diamond necklace.

Schwartz said this in her statement which prosecutors entered into court records in the trial against former Goldman Sachs banker Roger Ng.

The evidence provided by Schwartz contradicted former prime minister Najib Abdul Razak's claim in 2018 that the diamond...