FTC Lab-Grown Diamond Disclosure Rules: The 2026 Compliance Checklist for Jewelers

The FTC Jewelry Guides have been on the books for years. What's different in 2026 is the environment around them.

Consumer complaints about lab-grown misrepresentation are up. State attorneys general are running parallel investigations under their own deceptive-practices laws. India introduced new national labeling rules in January. The EU's diamond due-diligence framework went live on January 1. And FTC warning letters to jewelers using ambiguous product language are landing more frequently than they did five years ago.

None of this is hypothetical. A clean, documented disclosure habit is now a basic operational safeguard for any US jeweler selling lab-grown. Here is the checklist.

The foundation: what the FTC actually requires

The FTC's position on lab-grown diamonds is straightforward. When a seller uses the word "diamond" in a product description, the presumption is that it refers to a mined diamond. If the stone is laboratory-grown, the seller must disclose that — clearly, conspicuously, and in close proximity to the product description.

Three specific descriptors are considered acceptable under the FTC Jewelry Guides:

• laboratory-grown
• laboratory-created
• [manufacturer name]-created (for example, "Lightbox-created")

The word cultured is acceptable only when immediately accompanied by one of the three terms above. On its own, "cultured diamond" is not a compliant disclosure.

The word synthetic is technically allowable under the FTC Guides but is generally avoided by modern retailers because of negative consumer connotations.

The FTC has also explicitly stated that terms like "real," "genuine," or "natural" should not be used to describe lab-grown stones without qualification, because they can mislead consumers into thinking the stone was mined.

The 2026 compliance checklist

Run every product listing, invoice, ad, email, and social post through this list before it goes live.

Product listings on your website

• [ ] The descriptor "laboratory-grown" (or acceptable equivalent) appears immediately before the word "diamond" in the headline, not buried in specs or in a collapsed FAQ section.
• [ ] The product category is clearly labeled — "Lab-Grown Diamond Engagement Rings," not "Diamond Engagement Rings" with a lab-grown note several clicks deep.
• [ ] Structured data (product schema) uses the lab-grown designation.
• [ ] Images do not imply a mined origin (e.g. no "mined in [country]" visual references for lab-grown listings).

Point-of-sale signage and showcases

• [ ] Every case containing lab-grown inventory is labeled with the category clearly visible to a customer approaching the case.
• [ ] Stones displayed individually (loose diamond trays, ring displays) have lab-grown identifiers on the price tag or signage.
• [ ] Staff are trained to verbally disclose lab-grown status before a customer makes a decision — not at the end of a sale.

Invoices and receipts

• [ ] Every invoice for a lab-grown stone or lab-grown-set piece uses "laboratory-grown diamond" or an acceptable equivalent in the line item description.
• [ ] The invoice is not generic "diamond ring" with no origin qualifier.
• [ ] Certificate type (IGI, GIA, etc.) and report number are included on the invoice.
• [ ] Metal type, setting style, and center stone details are fully disclosed.

Advertising and print media

• [ ] Print ads, catalog pages, and direct mailers using the word "diamond" alongside a lab-grown product include the qualifier with equal conspicuousness (same font size, same proximity, not a fine-print footnote).
• [ ] Promotional sale language does not imply rarity or scarcity for lab-grown products in a way that conflicts with the category's actual supply dynamics.
• [ ] Environmental and ethical claims are substantiated. Claims like "eco-friendly" or "sustainable" should be backed by specifics, not asserted as blanket descriptors.

Social media

• [ ] Instagram, TikTok, Facebook, and Pinterest posts featuring lab-grown products use the qualifier "lab-grown" (or equivalent) in the primary caption, not only in a hashtag.
• [ ] Hashtags like #labgrown do not count as disclosure on their own — they can reinforce disclosure but cannot replace it.
• [ ] Hashtag strings that mix #diamond with #labgrown do not create contradictory impressions. If the headline of a post calls it a "diamond," the disclosure in the caption must be explicit.
• [ ] Influencer and affiliate partnerships include disclosure clauses in their contracts. The FTC's position is that Jewelry Guides apply equally to paid social content.

Website FAQ and education pages

• [ ] Lab-grown disclosure is NOT relegated to an FAQ page or education center. The FTC has specifically rejected this practice. Disclosure must occur at the point of purchase decision.
• [ ] Education pages are allowed and encouraged, but they supplement primary disclosure — they do not replace it.

Email marketing

• [ ] Subject lines and email headers that reference "diamond" products promoting lab-grown inventory include the qualifier in the subject line or first line of body copy.
• [ ] Personalized product recommendation emails carry the same labeling as the product listings they link to.

Trade-in, upgrade, and appraisal documents

• [ ] Appraisal documents for lab-grown pieces explicitly state lab-grown origin.
• [ ] Trade-in offers for lab-grown products identify the category on the offer sheet.
• [ ] Insurance-replacement documentation references "laboratory-grown" on every line.

Common compliance mistakes — and how to fix them

"Cultured diamond" alone

Wrong: "Our cultured diamond collection."

Right: "Our cultured [laboratory-grown] diamond collection."

The FTC allows "cultured" only when it's qualified. Used alone, it suggests something different from what it is.

Calling it "real" or "genuine"

Wrong: "Real diamond — 1.02 ct" (for a lab-grown)

Right: "Laboratory-grown diamond — 1.02 ct"

Lab-grown diamonds are chemically and optically identical to mined — they are real diamonds. But saying "real" in marketing implies mined origin to most consumers, and the FTC has warned against this phrasing.

Hashtag-only disclosure

Wrong: Caption reads "Our newest engagement ring." Hashtags include #diamond #labgrown #ethicalluxury.

Right: Caption reads "Our newest lab-grown diamond engagement ring." Hashtags can still include #labgrown for reach.

A hashtag at the end of a post does not count as clear and conspicuous disclosure.

Generic "diamond" headlines with buried qualifiers

Wrong: Website headline reads "2ct Diamond Solitaire — $2,200." Lab-grown disclosure appears only in the product specifications block seven scrolls down.

Right: Headline reads "2ct Laboratory-Grown Diamond Solitaire — $2,200." The qualifier is in the headline, exactly where the customer forms their impression.

Inconsistent descriptors across channels

If your website says "lab-grown," your Instagram says "cultured," and your invoices say "diamond," you have a consistency problem that invites warning letters. Pick one acceptable descriptor and use it everywhere.

What about India's BIS and the EU's DDS?

If you export to India or Europe, your compliance burden is broader than the FTC Guides alone.

India — BIS IS 19469:2025

India's Bureau of Indian Standards enforced new terminology rules in January 2026. Key provisions:

• The word "diamond" alone can only be used for natural stones.
• Lab-grown products must be explicitly labeled "laboratory-grown diamond" or "laboratory-created diamond."
• Terms like "cultured," "nature's," and "earth-friendly" are banned when describing lab-grown products.

For US jewelers shipping to India or selling through Indian online platforms, labeling compliance now follows the Indian rule, which is stricter than the US baseline.

EU — Due Diligence Statement on Diamond Origin

Effective January 1, 2026, EU imports of polished diamonds (in scope) require traceability evidence including a Due Diligence Statement on Diamond Origin. This applies to both natural and lab-grown diamonds, though the practical requirements differ.

US jewelers exporting to the EU should work with their wholesaler to confirm that origin documentation is available for each stone shipped into the EU market.

The simple rule of thumb

When in doubt: name the category in the headline, name it on the invoice, name it on the tag, name it in the caption.

If a reasonable customer could walk away from any one of those touchpoints thinking they were buying a mined diamond, the disclosure is not clear and not conspicuous.

What Guru Diam provides

Every stone shipped from Guru Diam includes:

• A certified grading report (IGI or GIA) identifying the stone as laboratory-grown
• An invoice line item using the compliant "laboratory-grown diamond" descriptor
• Recommended product description language retailers can reuse on their own listings
• Certification number for customer verification

For retailers building out compliant listings at scale, Guru Diam's trade account portal includes ready-to-copy product copy blocks. Contact our NY or LA office to set up access.

Final word

The FTC Jewelry Guides are not adversarial. They exist to protect a market in which lab-grown and mined diamonds can both legitimately thrive. A jeweler who treats disclosure as a baseline operational discipline — rather than a reluctant obligation — actually builds consumer trust faster than one who hedges.

The 2026 reality is that consumers are informed, attorneys general are active, and the cost of a warning letter or worse is not worth the perceived marketing gain of ambiguity. Name it what it is, consistently, everywhere.

Frequently Asked Questions