Authorised Chain of Custody Program Partners

Rio Tinto prides itself on its tightly controlled and audited chain-of-custody program that ensures the authenticity of diamonds from our Argyle mine in Australia and our Diavik mine in Canada. The companies on this list are all authorised suppliers of those diamonds, and all comply with the stringent requirements of third party auditors, so buyers can be assured of the provenance of the diamonds purchased under the Chain-of-Custody program banner from any company on this list.

Core Business

  • Chakri Supplier
  • Diamonds Supplier
  • Jewellery Manufacturer
  • Retailer

Program Partners