CIBJO, The World Jewellery Confederation
International
Confederation of national jewellery trade organisations; publishes the Blue Books (standards for naming and grading)
Associations & bourses
Trade associations, standards bodies and diamond bourses of the gem and jewellery industry, worldwide.
International bodies and standards
International Colored Gemstone Association (ICA)
International
Worldwide association of the coloured gemstone trade
International Diamond Manufacturers Association (IDMA)
Antwerp, Belgium
Diamond manufacturers' associations worldwide; fair practice and working conditions
International Precious Metals Institute (IPMI)
International
Association of the precious metals industry: education and networking
Kimberley Process
International
Intergovernmental certification scheme for rough diamonds (conflict diamonds)
LBMA
London, United Kingdom
Standards for the wholesale gold and silver market, incl. Good Delivery and responsible sourcing
Laboratory Manual Harmonisation Committee (LMHC)
International
Gem laboratories agreeing common wording for coloured stone reports
Responsible Jewellery Council (RJC)
London, United Kingdom
Standards and certification for responsible practice across the jewellery supply chain
World Diamond Council (WDC)
International
Represents the diamond industry in the Kimberley Process; System of Warranties
World Federation of Diamond Bourses (WFDB)
Antwerp, Belgium
Federation of the world's diamond bourses; trading rules and arbitration
Metal and gem promotion
Platinum Guild International (PGI)
International
Develops the market for platinum jewellery
The Diamond Collective
International
Promotes natural diamonds; the Natural Diamond Council's public name since 2026
The Silver Institute
International
Silver industry association: market data and research
World Gold Council
London, United Kingdom
Market development organisation for gold; research and data
Listed alphabetically. JewelLoop does not rank or endorse any organisation. Descriptions follow each organisation's own website.