Conflict-Free Diamonds & The Kimberley Process

Diamonds have long symbolized love, commitment, and enduring beauty. Yet behind this allure lies a complex global supply chain that has, at times, been linked to human rights abuses, civil conflicts, and environmental destruction. The term 'conflict diamonds' — also known as 'blood diamonds' — entered the public consciousness in the late 1990s, prompting an international response that would fundamentally reshape how diamonds are traded, tracked, and certified worldwide.

For jewelry brands, retailers, and conscious consumers, understanding the mechanisms that ensure diamonds are ethically sourced is no longer optional — it is a business imperative and a moral responsibility. The Kimberley Process Certification Scheme, established in 2003, remains the cornerstone of international efforts to prevent conflict diamonds from entering legitimate markets, but it is far from the only tool available. A growing ecosystem of additional certifications, blockchain-based traceability platforms, and industry best practices now provides multiple layers of assurance for those committed to responsible sourcing.

At Maneekan Siam, ethical sourcing is embedded in every aspect of our operations. As a certified member of the Responsible Jewellery Council (RJC) and a manufacturer committed to full supply chain transparency, we work exclusively with Kimberley Process-compliant suppliers and maintain rigorous chain-of-custody documentation for all gemstones that pass through our facility. In this article, we explore the history, mechanics, and limitations of the Kimberley Process, examine the emerging technologies and certifications that go beyond it, and explain how manufacturers and brands can verify that their diamond supply chains are truly conflict-free.

Conflict diamonds — defined by the United Nations as diamonds that originate from areas controlled by forces or factions opposed to legitimate and internationally recognized governments, and are used to fund military action against those governments — became a major international concern during the civil wars in Sierra Leone, Angola, and the Democratic Republic of Congo in the 1990s. In these conflicts, rebel groups seized control of diamond-rich territories and sold rough diamonds on the international market to finance weapons purchases, sustain military operations, and perpetuate devastating violence against civilian populations.

The scale of the problem was staggering. At the peak of the crisis, conflict diamonds were estimated to represent approximately 4% of the world's total diamond production — a seemingly small percentage that nonetheless translated into hundreds of millions of dollars flowing directly to armed groups responsible for widespread atrocities including forced labor, child soldiering, mass displacement, and systematic violence. The diamonds entered legitimate supply chains through porous borders, complicit intermediaries, and a lack of any systematic tracking mechanism, making it virtually impossible for end consumers to know whether the diamond in their engagement ring had funded a civil war.

International awareness of the conflict diamond problem grew dramatically through investigative journalism, NGO campaigns — notably by Global Witness and Partnership Africa Canada — and the 2006 film 'Blood Diamond.' This public pressure, combined with concern within the diamond industry itself that consumer confidence would collapse if the problem was not addressed, created the political momentum for the creation of an international certification scheme designed to break the link between diamond trading and armed conflict.

For jewelry brands and manufacturers, verifying that diamond sources are truly conflict-free requires a multi-layered approach that goes beyond simply requesting a Kimberley Process Certificate. Start with supplier due diligence: evaluate the sourcing policies, certifications, and track record of every diamond supplier in your chain. Suppliers should be able to provide Kimberley Process Certificates for all rough diamond purchases, maintain documented chain-of-custody procedures, and demonstrate compliance with recognized industry standards such as the RJC Code of Practices or the World Diamond Council System of Warranties.

Request and review documentation at every stage. This includes not only KP Certificates for rough diamond imports, but also invoices and transfer documents that show the chain of custody from rough dealer through cutting and polishing to the finished stone arriving at your manufacturing facility. Where available, ask for blockchain traceability records or supplier audit reports. Conduct periodic audits of your diamond suppliers — either directly or through third-party audit firms — and maintain records of all due diligence activities for transparency and accountability.

Build long-term relationships with a select group of trusted, certified suppliers rather than sourcing on the open market. Established relationships allow for deeper knowledge of supplier practices, more reliable documentation, and greater accountability. At Maneekan Siam, our diamond procurement is managed through long-standing relationships with Kimberley Process-compliant dealers who share our commitment to transparency and responsible sourcing, ensuring that every diamond entering our production facility meets the highest ethical standards.

At Maneekan Siam, ethical sourcing is not a marketing statement — it is an operational reality embedded in our procurement procedures, supplier relationships, and quality management systems. As a certified member of the Responsible Jewellery Council, we are independently audited against the RJC Code of Practices, which encompasses responsible sourcing, human rights, labor standards, environmental stewardship, and transparent business practices across our entire operation. Our RJC certification provides our brand partners with third-party verified assurance that their jewelry is manufactured under conditions that meet the industry's highest ethical standards.

Our diamond and gemstone procurement follows strict protocols. We source exclusively from Kimberley Process-compliant suppliers with whom we maintain long-term, transparent relationships. Every diamond shipment entering our facility is accompanied by proper documentation including KP Certificates where applicable, supplier declarations of conflict-free origin, and chain-of-custody records. Our procurement team conducts regular reviews of supplier practices and maintains detailed records of all sourcing activities. We do not purchase diamonds or gemstones from unknown or unverified sources, regardless of price or availability.

Beyond compliance, we actively support our brand partners in communicating the ethical provenance of their jewelry to end consumers. We provide sourcing documentation, supplier certifications, and material origin information upon request, enabling brands to make informed, verifiable claims about the responsible sourcing of their products. In an industry where trust is paramount, our commitment to transparency and documentation provides the foundation for authentic, credible brand storytelling around ethical jewelry.

Consumer awareness of conflict diamonds and ethical sourcing has grown dramatically over the past two decades, driven by media coverage, NGO campaigns, and a broader cultural shift toward conscious consumption. Research consistently shows that a significant and growing percentage of jewelry consumers — particularly younger demographics — consider ethical sourcing an important factor in their purchasing decisions. Brands that can demonstrate transparent, verifiable ethical sourcing practices gain a meaningful competitive advantage in this environment, while those unable to answer consumer questions about diamond provenance risk reputational damage and lost sales.

For jewelry brands, this consumer awareness creates both a responsibility and an opportunity. The responsibility is to ensure that supply chains are genuinely ethical and that marketing claims are backed by verifiable documentation. The opportunity is to differentiate through authentic storytelling about responsible sourcing — sharing the journey of each diamond from mine to finished piece, highlighting the certifications and standards that underpin your supply chain, and educating consumers about the systems that protect both people and the environment in diamond-producing regions. Partnering with a manufacturer like Maneekan Siam, which maintains RJC certification and comprehensive sourcing documentation, provides the credible foundation that authentic ethical brand communication requires.