The IT firm will provide end-to-end solutions, including data centre operations, multi-lingual service desk, LAN management, security services, service management and project services.
HCL already manages the IT Infrastructure of Anglo-American plc, which is the majority shareholder of De Beers.
“The current deal allows a tighter integration across the two companies with common technology platforms and IT service management,’’ the IT giant said.
"Where we have previously had several service providers in each local region, this agreement affords us more comprehensive management of our underlying IT environment and enables us to run a more industrialised infrastructure service that underpins our broader IT strategy," said Craig Charlton, chief information officer of De Beers Group.
"This deal marks HCL's continued expansion in emerging markets like South Africa and many locations across Africa, Latin America and Asia. It further strengthens HCL's presence in the mining vertical," said Ashish Gupta, HCL’s ISD executive vice-president.