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Another eight suspects linked to a multi-national diamond dealing syndicate are expected to hand themselves over to police on Monday.
Hawks spokesperson, Captain Paul Ramoloko says nineteen out of a total of 35 suspects have already been arrested and made their first appearance in the Kimberley Magistrate's Court.
He says they were released on bail ranging between five thousand and half a million rand.
Ramoloko confirmed that search and seizure warrants have been issued to attach assets worth some R50-million.
Timeslive reports that Project Darling is a two-year operation targeting the sale of illicit diamonds to specific international buyers.
Switzerland is allegedly the main destination of most of the precious stones.
Suspects hail from the Northern Cape, North West, Free State and Gauteng.