The appellant, Nicolaas Petrus Kotzè, a prominent businessman in Port Nolloth, was convicted on four counts of purchasing unpolished diamonds in contravention of s 20 of the Diamonds Act 56 of 1986. Between July 2001 and February 2002 he bought 21 unpolished diamonds for R63 000 from Frik Terblanche, who was in fact a senior police officer acting undercover in a covert operation (Project Solitaire) targeting unlawful diamond dealing. Kotzè contended that Terblanche, posing as a retired policeman in financial distress and cultivating a close personal and religious friendship, induced him to commit the offences. The evidence against Kotzè consisted primarily of Terblanche’s testimony and video recordings obtained during the undercover operation.