Questionnaire aims to learn more about diamond grading facilities.

A recent meeting of members of the British Jewellers’ Association and the National Association of Goldsmiths to discuss apparent anomalies in diamond grades attributed to stones by different grading organisations has led to the development of a special questionnaire.

It was agreed that a questionnaire will be drawn up by the BJA and the NAG and sent to diamond grading facilities worldwide, asking them to voluntarily supply basic information about themselves.


The agreed aim of the questionnaire is to fully understand such factors as management structure, grading processes, access to new technology, availability of master stones and staff qualifications.

The BJA and NAG will then manage a comprehensive list of grading laboratory competencies in order that the trade and consumer can have access to a far greater depth of data on which to base informed decisions on the selection of preferred laboratories and the potential basis of the quality of their prepared diamond reports.

BJA chief executive officer Simon Rainer commented: “The issue of diamond over grading and the vagaries in diamond grading consistency have been extensively reported on. As an industry, it is vital that we work together to help increase consumer confidence in the purchase of diamond jewellery. I am delighted at the positive outcome from just our first industry meeting.”

NAG chief executive officer Michael Rawlinson added: “I am extremely pleased that the N.A.G and BJA are working in close collaboration to address diamond grading issues. Through the excellent Chairmanship of Michael Allchin, we now have now convened a small working party to help draw up the questionnaire and will of course be consulting with the meeting attendees for their valued feedback.”