The Kimberley Process Certification Scheme, commonly abbreviated KPCS, is the formal name of the international system requiring participating states to certify and verify rough-diamond shipments crossing their borders to prevent the financing of armed conflict by rebel groups. The scheme came into operation on 1 January 2003 and is the principal international standard governing rough-diamond trade.

Document structure

The scheme is set out in a founding document agreed by participating states, with subsequent administrative procedures and decisions adopted by consensus of participants. The founding document defines the scope of conflict diamonds, the required elements of the Kimberley Process Certificate, the obligations of participants regarding imports and exports, the peer-review monitoring system, and the governance arrangements including the rotating chairmanship and working groups.

Required certificate elements

The standard Kimberley Process Certificate must include a unique serial number, the issuing authority and country, the country of origin or country of last export, the relevant harmonised tariff code (7102.10, 7102.21, or 7102.31), the carat weight, the value in United States dollars, the number of parcels in the shipment, the validity period of the certificate, and identification of the exporter and importer. The certificate accompanies the rough-diamond shipment and must be presented at import.

Participants' obligations

Each participating country must establish and maintain national legislation giving effect to the scheme; ensure that all rough-diamond exports are accompanied by a Kimberley Process Certificate issued by the national authority; refuse imports of rough diamonds without a valid certificate from another participant; refuse exports to non-participating countries; and submit annual statistics on rough-diamond trade and certificates issued. Participants are subject to peer-review visits to verify implementation.

Industry and civil-society roles

The World Diamond Council represents the diamond industry within the scheme as a permanent observer, supporting compliance through industry self-regulation including the System of Warranties, in which trade participants warrant in writing that diamonds have been handled in accordance with Kimberley Process requirements. Civil-society organisations historically held observer status, with the largest, Global Witness, withdrawing in 2011 over concerns regarding the scope of the conflict-diamond definition.

Implementation

National implementation varies by country. The European Union implements the scheme through Council Regulation (EC) No 2368/2002 and subsequent measures. The United States implements through the Clean Diamond Trade Act of 2003 and Executive Order 13312. Diamond-trading hubs including Antwerp, Mumbai, Dubai, and New York have designated authorities that issue certificates and maintain customs procedures.

Definition and limits

The scheme defines conflict diamonds as rough diamonds used by rebel movements to finance armed conflict aimed at undermining legitimate governments. The definition is narrow and excludes diamonds mined in conditions of human-rights abuse by state actors, diamonds funding criminal activity unrelated to anti-government conflict, and diamonds with environmental, labour, or community-displacement concerns. The narrowness has been the principal point of criticism since the scheme's launch and has prompted the development of broader Kimberley plus frameworks for ethical sourcing.

Significance

For the working trade the Kimberley Process Certification Scheme is the universal compliance baseline for legitimate rough-diamond trade across nearly all jurisdictions. It is necessary for legal trade and routine in administration. Beyond compliance, however, contemporary ethical-sourcing practice relies on additional frameworks, including the Responsible Jewellery Council standards, the OECD Due Diligence Guidance, traceability platforms such as Tracr, and laboratory origin reports. The KPCS remains the foundation; it is no longer the ceiling.