Diamond Council Rejects Synthetic Label for Lab Stones

The Diamond Producers Council aims to block a trade recommendation that classifies lab-grown diamonds as synthetic.

Updated on Oct. 20, 2026 in Jewelry

Gouache-painted illustration of a single faceted diamond, clean and minimalist, representing the industry dispute over labeling lab-grown stones. — The Diamond Producers Council is contesting a trade recommendation to label lab-grown diamonds as synthetic, threatening legal action against retailers. AI Illustration. Upload story photo >

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The Diamond Producers Council has officially rejected a World Jewellery Confederation (CIBJO) proposal to categorize lab-grown diamonds as synthetic. The Council is now pursuing legal remedies against retailers who adopt the label, arguing it misleads consumers.

Why it matters

The Council contends that the term synthetic carries a biased, deceptive connotation that suggests an imitation rather than genuine diamond material. This dispute highlights a growing conflict over how lab-grown stones are marketed in the jewelry industry.

A 2016 survey found 56% of consumers perceive synthetic diamonds as fake. The Diamond Producers Council represents an industry segment accounting for 20 million carats of annual lab-grown production.

The players

Diamond Producers Council

This trade organization represents producers in the diamond market and manages standards regarding lab-grown terminology.

World Jewellery Confederation

Also known as CIBJO, this international organization provides voluntary recommendations for jewelry industry standards and ethics.

Federal Trade Commission

This United States government agency protects consumers by enforcing regulations such as the Jewelry Guides regarding product disclosure.

The details

While the CIBJO 2026 Diamond Commission report suggests restricting 4Cs terminology to natural diamonds and using synthetic for lab-grown, the Council maintains this conflicts with Federal Trade Commission Jewelry Guides. The DPC is now evaluating potential class-action claims against market participants who adopt the contested terminology.

2016: Opinions Ltd. conducts a survey on consumer perception of synthetic diamonds.
2026: CIBJO releases its Diamond Commission report proposing the new terminology.
October 20, 2026: The Diamond Producers Council formally rejects the CIBJO recommendation.

Culture Shift

This move marks a challenge to the established industry standards set by the CIBJO in favor of the Federal Trade Commission Jewelry Guides. It underscores the broader tension in the jewelry sector as consumers shift toward accepting laboratory-grown alternatives.

Consumers should be aware that terminology for lab-grown stones may remain inconsistent across retail shops. Shoppers concerned about the specific materials in their jewelry should rely on formal disclosures mandated by federal standards.

The takeaway

Terminology in the jewelry market remains a significant point of contention as lab-grown options grow in popularity. Consumers are encouraged to verify that retailers use the accepted laboratory-grown or laboratory-created terminology to ensure they understand their purchase.