NAJ issues code of practice on legal use of weighing equipment

The National Association of Jewellers has published a code of practice setting out how jewellery businesses should use weighing equipment when handling precious metals and stones.

The guidance, produced with Trading Standards, aims to clarify legal obligations and reduce the risk of non-compliant transactions.

The document explains when Class II weighing instruments are required, the approvals and markings that jewellers should check, and why equipment must be calibrated for the location in which it is used. It also highlights common issues, including the use of non-approved scales and the need to re-verify equipment after it is moved.

Issued as Assured Advice through the association’s Primary Authority partnership with Trading Standards, the code is intended to give businesses confidence that following its recommendations will meet regulatory requirements and support consistent practice across the trade.

Katie Gillespie, NAJ compliance and policy manager, said: “We know that weighing precious metals and stones is an essential part of many jewellery transactions, but the legal requirements can be complex and are often misunderstood.

“Trading Standards approached the NAJ for help in producing clear, industry-specific guidance, and we’re pleased to offer NAJ members and the wider trade a straightforward resource that supports compliance and protects both businesses and consumers. This Code of Practice will help ensure accuracy, fairness, and professionalism across the trade.”

The association is encouraging all jewellers who work with precious metals, gemstones or pearls to review the guidance.

The code forms part of a wider series of NAJ documents covering areas such as diamond terminology, pricing and returns. These resources are designed to provide accessible explanations of sector-specific regulations and are available to the industry.