"The Chinese man arrested on Wednesday had dropped the diamond with his excreta today. It was handed over to the Cinnamon Gardens police for verification", police spokesman and Superintendent Ajith Rohana said yesterday.
The diamond believed to be worth USD 14,000 was swallowed by a Chinese national, Chow Wan, during the opening of FACET 2012, the annual international gem and jewellery exhibition.
The 32-year-old visitor had asked the stall owner for a close inspection of the 1.5-carat diamond before swallowing it.
It was feared that the man may have to face surgery to remove the diamond as an X-ray taken at the National Hospital here had showed the diamond was lodged in his gullet.
Police said the prosecution was keen on retrieving the stone and they are also looking to interview the arrested man's companion who had fled the exhibition site upon the arrest of his friend.
The two men had arrived as tourists on September 3.
Sri Lanka is famous for its gems, mostly blue sapphires and jewellery but does not mine diamonds.
