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Diamond Producers Council Rejects CIBJO Recommendation to Label Lab-Grown Stones Synthetic
MARKET NEWS

Diamond Producers Council Rejects CIBJO Recommendation to Label Lab-Grown Stones Synthetic

Rapaport reports on a newly formed lab-grown producers' group rejecting the World Jewellery Confederation's recommendation that non-mined diamonds be described only as synthetic. See the source for the statement.

Read original on Rapaport
By Rapaport22 October 20262 min read

Executive Summary

A recently launched group representing laboratory-grown diamond producers has publicly rejected guidance from the World Jewellery Confederation on how non-mined stones should be described to buyers. The disagreement centers on a single term and its competitive and regulatory stakes. Read the full article for each side's position.

Industry Impact

Terminology disputes look cosmetic but they decide how products are graded, advertised and taxed, so they carry real money. A standards body that is not a government regulator can still shape trade, because its voluntary guidance often becomes the default language in contracts, lab reports and retail tickets. In the United States, federal advertising rules set the outer limit on what any seller can claim, which means a national standard and a government rule can point in different directions at once. For the natural segment, clear separation of categories protects price. For lab-grown sellers, the fear is language that frames their product as less than a real diamond.

Next Steps

  1. Check which descriptive terms your lab reports and invoices currently use for non-mined goods.
  2. Align your consumer-facing language with national advertising rules in each market you sell into, not only with a single standards body.
  3. Document the basis for any category claim you make, in case a buyer or regulator asks.
  4. Watch whether major labs and retailers adopt or ignore the recommended term.
  5. Separate natural and lab-grown inventory clearly in your own records.

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Diamond Producers Council Rejects CIBJO Recommendation to Label Lab-Grown Stones Synthetic – D-Loupe Briefing