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Coloured stones: terminology, disclosure and trade descriptions
Imagem · CIBJOThe Coloured Stone Commission discusses how synthetic materials and colour descriptions should be communicated. Its report considers the limits of trade terminology and introduces work on opal and jade references for clearer international communication.
What the report says
The Coloured Stone Commission examines synthetic-material names and colour descriptions such as pigeon blood. Such terms should not automatically be treated as internationally uniform grades; laboratory opinions need clear attribution.
JEWEL DAILY perspective
Our reading: separate material identity, visible characteristics, laboratory findings and a brand’s aesthetic interpretation. An evocative name can describe a design without becoming an identification claim.
Use consistent terminology across certificates, labels and live selling. A concise shared vocabulary, preserving the laboratory’s actual wording, helps shoppers compare products more effectively than an expanding list of colour names.
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