Kimberley Process (KPCS)
Definition
An international certification scheme launched in 2003 that requires participant countries to certify that rough diamonds are conflict-free before export. Isotope and geochemical methods are used in research programmes to validate or challenge the documentary certifications.
- Launched
- 2003
- Requirement
- Certify rough diamonds as conflict-free before export
- Scientific check
- Isotope and geochemical validation of certificates
- Scope
- Participant country export certification
Common questions
What can isotope analysis tell you that the paper certificate cannot?+
Trace-element and isotope signatures reflect the geology of the mine a diamond actually came from, so a laboratory can compare a stone's chemical fingerprint against known deposit signatures and flag a mismatch with its declared origin even when the paperwork looks correct.
Is KPCS certification treated as forensic-grade proof of origin?+
No, it is an administrative and trade-compliance mechanism rather than a scientific chain-of-custody method, which is why research programmes developing isotope and geochemical fingerprinting exist specifically to test or supplement the documentary certification.
Related terms
- Conflict Mineral
- A mineral whose extraction or trade finances armed conflict. The OECD defines 3TG (tin, tantalum, tungsten, gold) from conflict-affected and high-risk areas...
- Epsilon-Nd (εNd)
- The 143Nd/144Nd ratio of a sample expressed as a deviation in parts per ten thousand from the chondritic uniform reservoir (CHUR). Positive...
- Inclusion Fingerprinting
- Identification of mineral inclusions trapped inside a gemstone during growth as indicators of the geological environment. Marble-hosted rubies typically contain calcite and...
- LA-ICP-MS Trace-Element Profiling
- Laser ablation inductively coupled plasma mass spectrometry applied directly to a polished gemstone surface. It measures dozens of trace elements simultaneously in...
- REE Pattern (Rare Earth Element Pattern)
- A plot of rare earth element concentrations normalised to chondrite or primitive mantle, showing the relative enrichment or depletion of each REE...