European jewellery buyers are increasingly seeing terms such as G7 certificate, G7 number, GF number, grandfathered goods, verification node, origin declaration and Due Diligence Statement appear in diamond paperwork.

At first glance, the terminology can feel unnecessarily technical.

The core distinction, however, is straightforward.

A G7 certificate is connected to eligible newly verified natural rough diamonds entering the G7 verification system.

A GF number is connected to grandfathered or legacy diamonds that were already held before the relevant sanctions cut-off and are regularised through a separate grandfathering process when applicable.

They are not interchangeable.

They are also not substitutes for a GIA, HRD or IGI grading report.

The source article already makes this central distinction clearly: G7 is associated with newly verified rough supply, while GF relates to grandfathered stock that existed before the sanctions framework changed.

For European jewellers, wholesalers and brand owners, understanding this difference matters because modern diamond buying is no longer only about:

Carat,

Colour,

Clarity,

Cut,

and price.

The commercial file behind the stone matters too.

A natural diamond may be beautifully cut and properly graded, but if a retailer cannot explain which compliance references apply—or wrongly describes a grading report as a G7 certificate—the business creates unnecessary risk.

For Dalila Diamonds, this creates a strong educational and B2B opportunity: helping European trade buyers source natural diamonds through Antwerp while clearly distinguishing gemological grading from origin and sanctions documentation.

Quick Answer: What Is the Difference Between a G7 Certificate and a GF Number?

A G7 certificate is issued through the G7 verification process for eligible natural rough diamonds of 0.50 ct or above and non-Russian origin when they are imported through the applicable verification route. A GF number is issued for qualifying grandfathered goods that were already held before the relevant sanctions cut-off and have been regularised under the grandfathering procedure. G7 numbers apply only to eligible rough diamonds; GF numbers can apply to grandfathered rough or polished goods. Neither one grades the diamond’s Colour, Clarity or Cut.

The easiest way to remember it is:

G7 = verified eligible rough supply.

GF = qualifying grandfathered legacy supply.

Why G7 and GF References Exist

The EU and G7 restrictions were created to prevent Russian-origin diamonds from continuing to enter major jewellery markets through either direct imports or indirect processing routes.

This matters because diamonds move through complex international supply chains.

A natural diamond may be:

mined in Botswana,

sorted in another country,

cut and polished in India,

graded in the United States,

traded through Antwerp,

and sold in France.

That makes origin verification more complicated than simply asking:

“Where did you buy the diamond?”

The G7 and GF mechanisms solve different problems within that broader framework.

The G7 route addresses eligible newly verified rough diamonds.

The GF route addresses qualifying older stock that already existed before the sanctions cut-off.

The source article correctly explains that these identifiers exist because not every diamond entering trade in 2026 is newly mined; some are long-held inventory, estate stones or legacy parcels that require different documentation treatment.

What Is a G7 Certificate?

A G7 certificate is part of the origin-verification framework for certain natural rough diamonds.

It is not a conventional diamond certificate.

It does not describe:

Colour,

Clarity,

Cut,

polish,

symmetry,

fluorescence,

or inclusion characteristics.

Those are gemological grading functions.

AWDC states that a G7 certificate is issued when eligible natural rough diamonds within scope pass the G7 verification process through Diamond Office. AWDC also states that G7 certificates are only issued for natural rough diamonds of 0.50 ct or above of non-Russian origin within the relevant import scope. No G7 certificate is issued for polished diamonds, synthetic rough diamonds or exports.

That distinction needs to be extremely clear in retailer content.

G7 Certificate Is Not a GIA Certificate

This is one of the most common terminology mistakes.

GIA / HRD / IGI Report

Explains gemological quality.

G7 Certificate

Supports origin verification within the sanctions framework for eligible rough diamonds.

They answer completely different questions.

DocumentMain Question AnsweredGIA / HRD / IGI reportWhat are the diamond’s grading characteristics?G7 certificate/numberWas eligible rough supply verified under the G7 origin process?GF numberWas qualifying legacy stock regularised under grandfathering?Supplier declarationWhat sourcing/origin information does the supplier attest to?Due Diligence StatementWhat reasonable origin-verification efforts were made for in-scope polished imports?

A jeweller should never tell a customer:

“This diamond is G7 certified”

when what they actually mean is:

“This diamond has a GIA grading report.”

What Does a G7 Number Look Like?

AWDC states that rough diamonds which pass G7 verification receive a 35-digit identifier, referenced on the relevant import declaration.

That identifier becomes part of the trade record.

For retailers farther down the supply chain, the important issue is not memorising the format.

It is ensuring that relevant references remain connected to the commercial documentation when they matter.

Why Polished Diamonds Do Not Receive a G7 Certificate

A polished diamond started as rough.

But the G7 certificate belongs primarily to the rough-diamond verification stage.

AWDC explicitly states that no G7 certificate is issued for polished diamonds.

That means a retailer purchasing a polished natural diamond should not ask:

“Where is this polished diamond’s G7 certificate?”

A better question is:

“What documentation supports the non-Russian origin of this polished diamond, and are any upstream G7 references linked to the supply chain where relevant?”

That is much more accurate.

What Polished-Diamond Buyers Should Look For Instead

A polished-diamond file may include:

supplier invoice,

grading-report number,

supplier origin declaration,

Due Diligence Statement support,

country-of-mining information where available,

and upstream G7-linked references where applicable.

The exact record varies depending on the transaction.

The key principle is continuity.

The polished diamond should not lose the commercial documentation trail created earlier in the supply chain.

What Is a GF Number?

GF refers to grandfathered goods.

AWDC defines grandfathered goods as qualifying non-industrial diamonds—rough or polished, natural or synthetic—of unknown or Russian origin that were already possessed before 1 January 2024 and meet the grandfathering requirements.

Unlike the general G7 certification process, grandfathering does not use the same size restriction.

AWDC states that diamonds of all sizes can fall within the grandfathering principle when the relevant requirements are met.

This is a major distinction.

G7 vs GF: The Core Difference

FactorG7 Certificate / NumberGF NumberMain purposeNew verified rough supplyQualifying legacy stockRough diamondsYesYesPolished diamondsNoYesNatural roughYesYesSynthetic roughNo G7 certificateCan qualify as GFMinimum size0.50 ct for G7 rough scopeNo general grandfathering size minimumOriginKnown, non-RussianMay be unknown or Russian if qualifying legacy stockHistorical possession neededNoYesIssued throughG7 verificationGrandfathering procedureDiamond grading functionNoNo

This is the comparison a European retailer actually needs.

A GF Number Can Apply to Polished Diamonds

This point is especially important because it separates GF from G7 even more clearly.

AWDC states that GF numbers may be issued for grandfathered shipments containing rough or polished diamonds.

G7 numbers, by contrast, are issued only to eligible natural rough diamonds.

That means:

polished diamond + G7 certificate = incorrect terminology

but:

polished grandfathered diamond + applicable GF number = possible

depending on the procedure.

What Does a GF Number Look Like?

AWDC states that a GF number consists of:

GF + 33 digits

for a total 35-character identifier.

Again, retailers do not need to memorise the format.

They need to preserve it correctly when it appears in the trade file.

Who Issues the GF Number?

AWDC states that the GF number is issued by the Belgian FPS Economy through the applicable Diamond Office verification process and appears on the import declaration.

This matters because a retailer cannot invent its own GF reference.

“Legacy stock” is an internal category.

A formal GF number is an actual trade identifier issued through the procedure.

How Does a Diamond Qualify for Grandfathering?

The key concept is date-stamped evidence.

AWDC states that GF treatment requires proof that the goods were already part of stock before the end of 2023.

Possible supporting evidence includes:

date-stamped grading certificates,

inventory records,

inheritance documentation,

dated purchase records,

insurance documentation,

or similar evidence.

This is why retailers should preserve historical documentation.

A 2021 invoice can become extremely important in 2026.

Example: G7 Stone vs GF Stone

Stone A: New Rough Supply

Natural rough diamond
0.80 ct
Known non-Russian mining origin
Imported through G7 verification route
Receives applicable G7 identifier

Stone B: Legacy Polished Stock

0.85 ct polished natural diamond
Held in company inventory since 2021
Historical invoice available
Eligible grandfathering procedure used
May receive GF identifier when moved through applicable process

Both stones can be legitimate.

They simply entered the compliance framework through different routes.

Neither G7 nor GF Replaces GIA, HRD or IGI

This distinction should appear repeatedly because it protects both SEO accuracy and customer trust.

The source article makes the same point: G7 and GF references relate to origin/compliance, whereas grading reports describe gemological quality.

A customer buying an engagement ring may want to know:

Carat,

Colour,

Clarity,

Cut.

That is where the grading report matters.

A compliance team may want to know:

which verification route applies,

whether the goods are legacy stock,

or what origin records exist.

That is where G7/GF and other sourcing documentation matters.

Better Customer-Facing Language

Weak:

“This is a G7-certified polished diamond.”

Better:

“This natural diamond has a recognised gemological grading report, while our supplier records retain the relevant origin and compliance information behind the stone.”

Weak:

“This old GIA diamond has a GF certificate.”

Better:

“This is documented legacy stock. Where the grandfathering process applies, the GF reference is kept separately from the grading report.”

Why Retailers Should Record G7 and GF References

A reference is only useful if the business can retrieve it later.

A jewellery retailer may need the record when:

exporting the stone,

returning it to a supplier,

moving inventory between jurisdictions,

handling an insurance query,

processing an upgrade,

reselling a legacy stone,

or reviewing a customer buyback.

The source article recommends linking relevant references to invoices and digital stock records rather than leaving them buried in emails.

That is exactly the right operational approach.

Recommended Diamond Compliance File

RecordStore It?Internal stock numberYesGIA / HRD / IGI reportWhere applicableSupplier invoiceYesPurchase dateYesOrigin declarationWhere relevantG7 numberWhere applicableGF numberWhere applicableDue Diligence Statement supportWhere applicableShipment referenceYesLegacy/current stock classificationYesCustomer invoiceAfter sale

The business should be able to reconstruct the stone’s commercial history without relying on staff memory.

One Stone, One Digital File

A simple folder can be enough.

For example:

DL-2026-0824_GIA1234567890_0.72ct_Round

Inside:

grading report,

invoice,

supplier declaration,

G7/GF information if relevant,

stock note,

and shipment records.

That is far more useful than compliance references stored in separate inboxes.

Why Rough-Diamond Verification Still Matters to Polished Buyers

Retailers buy polished diamonds.

So why should they understand a rough-diamond G7 certificate?

Because polished diamonds originate from rough diamonds.

The verification performed at the rough stage can form part of the upstream documentation that supports later polished supply.

The source article makes this connection explicitly.

The retailer does not necessarily need the same original certificate in hand as if they were the rough importer.

But they should understand what their supplier means when referring to:

G7-linked supply,

verified rough,

or upstream G7 reference.

The Botswana Verification Node

The source article also refers to Botswana’s role in the developing G7 verification system.

This is commercially interesting because Botswana is one of the world’s important diamond-producing countries.

For a retailer, however, the language must stay precise.

A Botswana verification point does not mean:

every stone verified there was mined in Botswana.

It means Botswana participates in the verification infrastructure.

Supplier records still determine the actual origin story of the specific goods.

Do Not Turn Verification Infrastructure into Origin Marketing

Wrong:

“This is Botswana-certified, so it is a Botswana diamond.”

Better:

“The supply chain uses recognised verification infrastructure, while the actual mining-origin documentation for the specific goods is retained separately.”

Precision builds more trust than marketing shortcuts.

What Retailers Should Ask Suppliers in 2026

A European retailer does not need to become a sanctions specialist.

But the buying team should ask useful questions.

For newly sourced natural diamonds:

Is this current stock or legacy stock?

Does any G7 reference apply upstream?

Is this polished diamond supported by a Due Diligence Statement process where applicable?

What origin documentation is available?

Does the invoice identify the relevant stone and report number?

For legacy stock:

When did the supplier acquire the goods?

What evidence supports grandfathered status?

Has a GF number been issued where applicable?

Is that reference connected to the commercial file?

These questions fit naturally into professional sourcing.

Supplier Question Table

QuestionWhy AskNew or legacy stock?Determines documentation routeRough or polished?G7 rules differG7 number applicable?Upstream rough verificationGF number applicable?Grandfathered stockInvoice linked to reference?Future retrievalGrading report linked?Stone identificationOrigin declaration available?Polished due diligenceStock mixed?Segregation riskBuyback/estate goods?Different intake history

A serious supplier should understand these distinctions.

Current Stock Should Not Be Mixed with Legacy Stock Carelessly

One of the most important themes in the source article is stock segregation.

A retailer should know whether a diamond is:

new documented stock,

grandfathered stock,

legacy stock under review,

customer buyback stock,

estate stock,

or unknown-documentation stock.

The physical diamonds can all be natural.

Their paperwork status can be completely different.

Example

Diamond A

2026 supplier invoice
Current polished stock
Supplier origin declaration
GIA report

Diamond B

Purchased in 2021
Historic invoice
GF number obtained through grandfathering procedure
HRD report

Diamond C

Customer trade-in
Old IGI report
No original purchase record

All three diamonds need different documentation treatment.

What About Diamonds Bought from Private Owners?

AWDC states that jewellery purchased from private owners is not currently in scope of the G7 Diamond Office sanctions framework in the same way as loose diamonds.

However, loose diamonds of unknown origin acquired from private owners need to use the applicable grandfathering mechanism if the grandfathering route is required.

That distinction is very important for jewellers with buyback programmes.

Jewellery Buyback vs Loose-Diamond Buyback

ItemPractical Documentation PositionComplete jewellery item from private ownerDifferent treatment under current AWDC G7 scopeLoose diamond of known originCan be documented according to originLoose diamond of unknown originMay require GF reviewLegacy retailer stockReview historical evidenceNewly sourced polished diamondCurrent supplier due diligence

Retailers should not treat every customer trade-in identically.

What Is the Due Diligence Statement on Diamond Origin?

From 1 January 2026, AWDC states that importers of in-scope natural polished diamonds of 0.50 ct or above must add a Due Diligence Statement on Diamond Origin to their customs declaration.

The statement confirms that:

the imported diamonds are not of Russian origin,

and

the importer made sufficient efforts to verify this.

This is a polished-diamond compliance mechanism.

It is not a G7 certificate.

That distinction should be explicit.

G7 vs GF vs DDS

TermApplies Mainly ToCore PurposeG7Eligible natural roughRough-origin verificationGFQualifying legacy rough/polished goodsGrandfatheringDDSIn-scope natural polished importsNon-Russian origin due diligence

This three-way distinction is more useful than treating all origin paperwork as one category.

How Long Should Records Be Kept?

AWDC states that documentation supporting the 2026 polished-diamond due-diligence process should be retained for five years.

For retailers, longer retention may often make commercial sense because natural diamonds can return years later for:

upgrade,

resale,

insurance,

repair,

or inheritance.

Regulatory minimum and customer-lifetime record keeping do not necessarily need to be identical.

Should G7 or GF Numbers Appear on Invoices?

AWDC recommends that relevant G7 identifiers remain connected to invoices and the goods through the trade chain because the reference may later help demonstrate verified origin when the goods return as polished.

For GF goods passing through Diamond Office, the relevant G7/GF declaration process applies, and GF information should remain linked to the shipment records.

For retailers, the operational rule is:

if the identifier matters, store it with the invoice and stock record.

Why Compliance Documentation Can Become a Commercial Advantage

The source article rightly argues that clear documentation can improve trust rather than simply creating paperwork.

Modern natural-diamond customers increasingly ask:

Where did it come from?

Is it natural?

What certificate does it have?

Is it Russian origin?

Can it be resold?

Does the jeweller keep records?

A retailer does not need to answer with regulatory jargon.

They need to demonstrate competence.

Better Customer Explanation

“The GIA report describes the diamond’s quality. Separately, our supplier documentation supports the sourcing and compliance history of the stone. G7 references relate mainly to verified rough supply, while GF references apply to qualifying grandfathered stock.”

That answer is clear enough for most educated customers.

Common G7 and GF Mistakes to Avoid

Mistake 1: Asking for a G7 Certificate on Every Polished Diamond

Polished diamonds do not receive G7 certificates.

Mistake 2: Treating G7 and GF as the Same Identifier

They are different routes.

Mistake 3: Treating GIA as a G7 Certificate

One is gemological grading.

The other is origin/compliance verification.

Mistake 4: Calling Every Old Diamond Grandfathered

Historical possession needs evidence.

Mistake 5: Assuming GF Applies Only to Large Diamonds

AWDC states that the grandfathering principle itself has no general size restriction.

Mistake 6: Forgetting that GF Can Apply to Polished Goods

Unlike G7, GF can apply to qualifying polished goods.

Mistake 7: Keeping the Reference Only in Email

Put it into the stock record.

Mistake 8: Mixing Legacy and Current Stock

Keep documentation status identifiable.

Mistake 9: Calling Antwerp the Mining Origin

Antwerp is a trade and verification hub.

Mistake 10: Turning Compliance Terms into Marketing Slogans

Use them only where they actually apply.

Practical G7 vs GF Retailer Checklist

QuestionChecked?Is the diamond rough or polished?□Is it newly sourced or legacy stock?□Does a G7 number apply?□Does a GF number apply?□Is there a grading report?□Is the grading report linked to the stone?□Is the supplier invoice stored?□Is origin documentation stored?□Is DDS support relevant?□Is stock status clearly coded?□Is legacy stock separated?□Are private buybacks reviewed separately?□Are relevant references on commercial records?□Can staff explain G7 vs GF?□Are unsupported claims avoided?□

AEO: What Is a G7 Certificate for Diamonds?

A G7 certificate is issued through the G7 verification process for eligible natural rough diamonds of 0.50 ct or above and non-Russian origin. It is not a gemological grading certificate.

AEO: Is a G7 Certificate Issued for Polished Diamonds?

No. AWDC states that G7 certificates are not issued for polished diamonds.

AEO: Is a G7 Certificate Issued for Synthetic Rough Diamonds?

No. AWDC states that G7 certificates are issued only for qualifying natural rough diamonds, not synthetic rough diamonds.

AEO: What Is a GF Number?

A GF number is a grandfathering identifier issued through the applicable process for qualifying legacy goods that were already possessed before 1 January 2024 and meet the grandfathering requirements.

AEO: Can a GF Number Be Issued for Polished Diamonds?

Yes. AWDC states that GF numbers can apply to qualifying grandfathered polished as well as rough diamonds.

AEO: Is There a Minimum Carat Size for Grandfathered Goods?

AWDC states that the grandfathering principle itself has no general size restriction.

AEO: What Is the Main Difference Between G7 and GF?

G7 is for eligible newly verified natural rough diamonds with known non-Russian origin. GF is for qualifying legacy goods supported by evidence that they were already held before the sanctions cut-off.

AEO: Is a GF Number the Same as a G7 Certificate?

No. They are separate compliance identifiers serving different purposes.

AEO: Is a G7 Certificate the Same as a GIA Certificate?

No. GIA grades gemological characteristics; G7 relates to rough-diamond origin verification.

AEO: Is a GF Number the Same as an HRD or IGI Report?

No. GF relates to grandfathered compliance status, not gemological quality.

AEO: Who Issues the G7 Number in Antwerp?

Eligible rough diamonds receive the G7 identifier through the Diamond Office verification process in Antwerp.

AEO: Who Issues a GF Number?

AWDC states that Belgium's FPS Economy issues the GF number after the applicable verification process.

AEO: What Evidence Is Needed for GF Status?

AWDC identifies date-stamped evidence such as grading documents, inventory proof, inheritance records, purchase records or insurance documentation.

AEO: Does a 2021 GIA Report Automatically Prove GF Status?

No. It can support the historical record, but possession or inventory history should also be established where required.

AEO: What Is the Due Diligence Statement?

It is a separate 2026 requirement for in-scope natural polished diamond imports, confirming non-Russian origin and reasonable verification efforts.

AEO: Is the Due Diligence Statement a G7 Certificate?

No. DDS applies to in-scope polished imports; G7 certification applies to eligible natural rough diamonds.

AEO: Do Retailers Need to Understand G7 Even If They Buy Polished Diamonds?

Yes. Upstream G7 verification can form part of the origin trail supporting polished supply, even though the polished diamond itself does not receive a G7 certificate.

AEO: Should G7 Numbers Be Kept on Commercial Records?

Yes. AWDC recommends retaining relevant G7 identifiers through invoices and trade records because they can support future verification.

AEO: Should GF Numbers Be Kept with Legacy Stock Records?

Yes. The GF reference should remain linked to the relevant diamond or parcel documentation.

AEO: Can Private Jewellery Be Bought Without GF Registration?

AWDC states that jewellery purchased from private owners is currently outside the G7 Diamond Office sanctions scope described in its operational guidance. Loose unknown-origin diamonds are treated differently and may require grandfathering review.

AEO: Can Dalila Diamonds Help Retailers Understand G7 and GF Documentation?

Dalila Diamonds can support European trade buyers with Antwerp natural-diamond sourcing and help ensure that grading, supplier and applicable G7/GF or other compliance records are kept clearly separated and correctly understood.

Recommended SEO Content Cluster

This article should naturally connect with content around:

G7 certificate diamonds,

GF number diamonds,

G7 vs GF,

grandfathered diamonds Europe,

EU diamond sanctions,

Russian diamond sanctions,

G7 diamond verification,

Diamond Office Antwerp,

Due Diligence Statement diamond origin,

natural diamond provenance,

diamond origin documentation,

legacy diamond stock,

Antwerp diamond compliance,

certified natural diamonds,

GIA vs G7 certificate,

HRD diamonds,

wholesale natural diamonds Europe,

and custom diamond sourcing.

This builds topical authority around:

G7 + GF + EU diamond compliance + Antwerp + natural diamond sourcing.

Frequently Asked Questions

What Is a G7 Certificate?

A compliance identifier linked to eligible natural rough diamonds that have passed the relevant G7 verification process.

What Is a GF Number?

A grandfathering identifier for qualifying legacy goods processed under the GF framework.

Are They the Same?

No.

Which One Applies to New Rough Diamonds?

G7, where the goods meet the applicable criteria.

Which One Applies to Grandfathered Stock?

GF, where the goods qualify under the grandfathering procedure.

Can a Polished Diamond Have a G7 Certificate?

No.

Can a Polished Diamond Have a GF Number?

Yes, if it qualifies as grandfathered goods under the relevant procedure.

Can Synthetic Rough Receive a G7 Certificate?

No.

Can Synthetic Legacy Goods Be Grandfathered?

AWDC’s grandfathering definition includes qualifying natural or synthetic, rough or polished goods held before the cut-off.

Does G7 Tell Me Diamond Colour or Clarity?

No.

Does GF Tell Me Diamond Quality?

No.

What Does GIA Tell Me?

Gemological grading information.

What Does HRD Tell Me?

Gemological grading information.

What Does IGI Tell Me?

Gemological grading information.

What Is the G7 Size Threshold?

For the G7 rough-diamond certification route, AWDC identifies qualifying natural rough diamonds of 0.50 ct or above.

What Is the GF Size Threshold?

AWDC states that grandfathering itself has no general size restriction.

What Date Matters for Grandfathered Goods?

AWDC defines GF goods around possession before 1 January 2024.

What Evidence Can Show That?

Historical invoices, grading documents, inventory records, inheritance records, insurance documents or similar dated evidence.

Is a GIA Report Enough?

Not necessarily for grandfathering or origin compliance.

Does a G7 Number Need to Stay with the Goods?

It should remain connected to the commercial and traceability record when relevant.

Does GF Need to Stay with the Goods?

The GF reference should remain linked to the shipment and stock history when applicable.

What Is DDS?

The Due Diligence Statement on Diamond Origin for in-scope natural polished imports in 2026.

Is DDS the Same as GF?

No.

Is DDS the Same as G7?

No.

Should Sales Staff Explain All of This to Customers?

Usually not.

Staff need to understand it internally and explain only what is relevant.

What Is a Good Customer Explanation?

“The grading report describes the diamond’s quality, while separate trade documentation supports its origin and compliance history.”

Why Does Antwerp Matter?

Antwerp is deeply integrated into the G7/GF verification, Diamond Office and European diamond-trade infrastructure.

Can Dalila Diamonds Source New Natural Diamonds?

Yes.

Can Dalila Diamonds Help Retailers Keep Documentation Clear?

Yes. The strongest role is to provide clear supplier, grading and applicable sourcing/compliance records without confusing them with one another.

Conclusion: G7 and GF Answer Different Questions

The terminology becomes much easier once the functions are separated.

A G7 certificate belongs to the verification route for eligible natural rough diamonds.

A GF number belongs to the grandfathering route for qualifying legacy goods.

A GIA, HRD or IGI report belongs to gemological grading.

A Due Diligence Statement belongs to the 2026 polished-diamond origin-verification process.

Those are four different documentation functions.

They should never be collapsed into one vague idea of a “diamond certificate.”

The source article reaches the same central conclusion: European retailers need to know which references apply, keep them connected to the correct invoices and stock records, separate new goods from legacy inventory and avoid using G7 or GF terminology loosely in customer communication.

For a retailer, the practical process is simple.

Ask whether the goods are rough or polished.

Ask whether they are current or legacy stock.

Check whether G7, GF or DDS documentation is relevant.

Keep the grading report separate from compliance records.

Store identifiers with the correct stock item.

Keep legacy goods distinguishable from current supply.

Review customer buybacks separately.

And never claim that a compliance reference proves gemological quality.

For Dalila Diamonds, the value is not only supplying natural diamonds from Antwerp.

It is helping trade buyers receive a commercial file they can actually understand.

A jeweller may buy a new polished Round Brilliant.

Another may deal with a grandfathered Emerald Cut.

Another may source a stone whose rough supply carried a G7 reference.

Another may handle a customer trade-in requiring separate review.

The documentation route changes.

But the rule remains constant:

G7 tells one part of the origin story, GF tells another, and neither replaces the grading report that tells the customer what the diamond itself actually is.