The phrase Kimberley plus frameworks refers, in industry and civil-society discussion, to a set of initiatives that build on the foundation of the Kimberley Process Certification Scheme by addressing concerns the original scheme does not cover. The original Kimberley Process, which came into operation in 2003, focuses narrowly on rough diamonds mined to fund armed conflict against legitimate governments. The frameworks grouped under the Kimberley plus heading extend coverage to broader human rights, environmental, labour, and traceability concerns that the diamond trade has confronted in the years since 2003.

Limitations of the original Kimberley Process

The original Kimberley Process Certification Scheme was negotiated in the early 2000s in response to the funding of civil wars in Sierra Leone, Angola, the Democratic Republic of the Congo, and Liberia by rebel factions selling diamonds. Its definition of conflict diamonds is therefore narrow: rough diamonds used by rebel movements to finance armed conflict aimed at undermining legitimate governments. It does not cover diamonds mined in conditions of human-rights abuse by state actors or private operators, nor does it cover environmental concerns, child labour, or worker safety. It applies to rough diamonds only, and does not address treatment, synthetics, or polished-stone disclosure. These limitations were widely recognised even at the scheme's inception and have driven the development of supplementary frameworks since.

Industry-led initiatives

The Responsible Jewellery Council, established in 2005, is the principal industry-led framework. It develops a Code of Practices and a Chain of Custody standard that members must implement to maintain certification. Coverage extends from gold and platinum to coloured stones in addition to diamonds, and the standards address human rights, labour conditions, environmental management, and traceability. Major industry participants including Tiffany & Co., Cartier, Boucheron, and most large diamond manufacturers and retailers are members. The De Beers Group's Best Practice Principles framework, applied to its Sightholders and other commercial partners, predates the RJC and has been substantially aligned with it.

Provenance and traceability initiatives

Several initiatives have developed traceability systems that provide more granular origin information than the Kimberley Process certification document, which travels only with rough-diamond batches. De Beers' Tracr platform, launched in 2018, uses blockchain technology to record diamonds from rough through to polished. The Forevermark programme of De Beers documented individual diamonds against quality and ethical-source criteria. The GIA Diamond Origin Report and the Sarine Diamond Journey provide independent third-party origin documentation. These initiatives address the polished-stone gap left by the original Kimberley Process.

Civil-society frameworks

Civil-society organisations including Global Witness, Human Rights Watch, IMPACT (formerly Partnership Africa Canada), and the Diamond Development Initiative have developed independent monitoring frameworks and have pushed for reforms of the original Kimberley Process. Global Witness withdrew from the Kimberley Process in 2011, citing what it described as the scheme's failure to address human-rights concerns in producing countries that fall outside the narrow conflict-diamond definition. The civil-society frameworks have driven much of the public pressure for the Kimberley plus initiatives.

Coloured-stone and gold sectors

For coloured stones and gold, parallel frameworks have developed that share some principles with Kimberley plus thinking. The Responsible Sourcing Network and the Initiative for Responsible Mining Assurance address gold mining in particular. The Coloured Gemstones Working Group, established in 2017, brings together major coloured-stone supply-chain participants. The OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas applies broadly across minerals.

National and supranational regulation

The European Union's Conflict Minerals Regulation, in force since 2021, requires due diligence on tin, tantalum, tungsten, and gold imports above specified volumes. The United States Dodd-Frank Act Section 1502, in force from 2010, imposes related disclosure requirements on listed companies. These regulations function as Kimberley plus measures in that they extend the conflict-mineral framework beyond rough diamonds, although they do not directly amend or replace the Kimberley Process itself.

Origin and disclosure laboratories

The major gem laboratories, including GIA, Gübelin, SSEF, AGL, GRS, and Lotus Gemology, have substantially expanded their origin and treatment determination services since the early 2000s. Origin reports are now widely available for ruby, sapphire, emerald, paraíba tourmaline, and other coloured stones, and the major laboratories have invested in ethical-supply-chain documentation alongside gemmological analysis. These services function as Kimberley plus mechanisms by giving buyers verifiable provenance information beyond the level of detail provided in basic Kimberley Process certificates.

Significance

For the trade the Kimberley plus frameworks represent the maturation of supply-chain ethics from the narrow focus of the original Kimberley Process to a comprehensive coverage of human-rights, environmental, labour, and traceability concerns across all gem categories and metals. The original Kimberley Process remains the foundation, but no serious participant in the gem trade now treats Kimberley Process certification as sufficient on its own. The Kimberley plus framework matters because the trade's social licence to operate now depends on the broader picture, and because buyers increasingly expect traceable, documented, and ethically sourced material across the full spectrum of gems and metals.