Platinum Guild International (PGI)
International
Develops the market for platinum jewellery
Associations & bourses
Trade associations, standards bodies and diamond bourses of the gem and jewellery industry, worldwide.
Metal and gem promotion
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.