The National Association of Goldsmiths (NAG) was the principal trade body for the British jewellery and silversmithing industry from its founding in 1908 until its merger with the British Jewellers' Association in 2015. NAG administered training and certification programmes, ethical standards, and policy advocacy for jewellers and goldsmiths across the United Kingdom. The merged organisation operated as the National Association of Jewellers (NAJ) and provides continuing trade-body services for the British industry.

Activities and services

NAG provided membership accreditation for retailers, manufacturers, and professional jewellers, with codes of conduct covering disclosure, hallmarking compliance, and consumer protection. The association ran the Joint Education Committee Diploma in Jewellery and the Professional Jewellers' Certificate — long-standing qualifications recognised in the British trade — and operated the JET (Jewellery Education and Training) programmes for technical training. Member services included legal and regulatory guidance, insurance and security advice, and trade-fair representation.

Hallmarking advocacy

NAG worked closely with the four British assay offices (London, Birmingham, Sheffield, and Edinburgh) and with the British Hallmarking Council on consumer education and policy. The UK hallmarking system, codified in the Hallmarking Act 1973, is one of the oldest and most rigorous consumer-protection regimes in any country's precious-metal trade, and NAG's advocacy supported its continuing operation through periods of regulatory and industry change.

Vintage NAG marks

Some vintage British jewellery may carry NAG membership marks alongside official assay-office hallmarks. These are organisational marks rather than legal hallmarks and indicate that the maker or retailer was a NAG member at the time of production. They have no legal standing under the Hallmarking Act but can assist provenance research on twentieth-century British pieces.

Successor organisation

The 2015 merger that created the National Association of Jewellers (NAJ) consolidated the trade-body function for British jewellers under a single organisation. NAJ continues NAG's training, accreditation, and advocacy work and operates from offices in Birmingham. References in older trade literature to 'NAG' apply to the pre-2015 organisation; current British trade-body activity sits under NAJ.

Further reading

• National Association of Jewellers — successor body
• The Goldsmiths' Company — UK hallmarking and trade reference
• Assay Office London — UK hallmarking system