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EGL certification in a few lines:
- EGL stands for European Gemological Laboratory, a for-profit grading network started in Europe in 1974, not one lab, but several separately owned labs sharing one name.
- EGL grades run soft: a stone printed as G color on an EGL report can come back I or J at GIA, and clarity often slides 2 to 3 grades as well.
- EGL invented the SI3 clarity grade, a grade GIA has never recognized, and it exists to make an included diamond sound like a step up.
- The lower price on an EGL stone is not a discount. The market is pricing the report, not the diamond.
- In twelve years of shopping stones for readers, we’ve never found an EGL-graded diamond listed on a retailer we would recommend.
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What Does EGL Mean?
EGL stands for European Gemological Laboratory, a for-profit diamond grading business founded in Europe in 1974. It is not a single institute. The name is shared by separately owned labs (EGL USA, EGL International, EGL Israel, EGL India, EGL South Africa and others) and each one grades to its own house standards, on its own report layout.
For European readers the name will ring louder than it does in the US, where GIA dominates the conversation. EGL has claimed over a thousand scientists and graders across its labs.
We tried to verify that. There is a site for EGL USA, another for Israel, another for India, but no definitive corporate reference site that ties the network together, and the one page presenting itself as the original looked like a 1995 throwback the last time we checked it, with almost no substantive information on it.
Every other major grading lab has a Wikipedia page. EGL does not. Intriguing, isn’t it?
What Is an EGL Diamond Certificate?
An EGL diamond certificate is a grading report listing a stone’s carat weight, color, clarity, cut, measurements, finish, fluorescence and inclusion plot, issued by one of the EGL laboratories. It looks like any other report. The problem is not the format. It is that the grades printed on it are usually softer than the grades GIA would assign to the same diamond.
The reason this blog exists is to stop you being talked into a stone that isn’t what the paper claims. Consider it a preventative measure against paying a colorless-and-VVS price for a stone that is neither.
You’re already acquainted with the 4Cs, aren’t you? Cut, color, clarity and carat weight. When a lab grades a diamond against those characteristics and issues a document for it, you get what the trade calls a certified diamond.
That document is only as good as the lab behind it. A report from a soft grader isn’t protection. It’s decoration.
EGL Grading Standards: The SI3 Problem
EGL grades typically sit 1 to 3 grades above GIA on the same stone, most often in color and clarity. The single clearest piece of evidence is SI3, a clarity grade EGL introduced that GIA has never recognized. It sits between SI2 and I1, and it hands an included diamond a name that sounds like a promotion.
You know SI1 and SI2. But have you ever come across SI3?
Instead of stamping a stone I1 (a grade nobody would touch with a ten-foot pole) the grade was invented so the diamond could be presented as the bottom of the SI range rather than the top of the included range. We generally advise against going below SI1 clarity, because eye-visible inclusions are not a feature.
So who benefits from SI3? Sellers. Not you.
Tip: any grade you cannot find on the published GIA scale was invented by somebody with inventory to move, not by a standards body. Check the grade against the diamond clarity chart before you check the price.
Why Was EGL Famous for 72-Hour Reports?
Because in the decades before modern grading equipment existed, EGL could turn a submitted diamond into a finished certificate within 72 hours, which made them one of the fastest graders in the world. Speed was the selling point. Speed was also the tell, since grading is not supposed to be a race against the clock.
A reliable grade isn’t a once-over. The stone has to be inspected with high-quality tools, analyzed by more than one grader, then compared against master stones of known grade before a final call is made.
Could all of that happen in 72 hours, at scale, in the 1970s and 1980s? We have our doubts.
The equipment GIA and AGS use today is far ahead of anything available back then, so turnaround time is no longer a differentiator for anyone. Fast reports stopped being impressive a long time ago.
Why Are There Multiple EGL Labs?
Because EGL grew as a commercial network rather than a single institute. After the original lab opened in Europe in 1974, independent laboratories carrying the same name opened in other countries, and each one set its own protocols. The result is that an EGL Israel report and an EGL New York report on the same diamond can read very differently.
It’s tempting to call the arrangement a franchise. Then again, real franchise businesses hold every branch to one uniform procedure. EGL never did.
Broadly, the labs in New York and Los Angeles carry a better reputation than the rest of the network. Even so, an EGL report will generally hand a diamond friendlier diamond color and clarity grades than a GIA report on the identical stone. That’s just the way it is.
EGL USA vs EGL International vs EGL India
These are three separate businesses that share a name. EGL USA is the strictest of the three and the only one the trade treats semi-seriously. EGL International is the least trusted, to the point that a major trading network delisted its reports. EGL India sits closer to International than to USA, and its reports surface mostly in stones bought abroad or on the secondhand market.
1. EGL USA
The US operation runs its own labs and its own report formats, and it has spent years distancing itself from the rest of the network. Grades are the tightest you’ll see under the EGL name. Tightest under the EGL name is still looser than GIA, though.
2. EGL International
EGL International reports have the worst reputation of the group, and in 2014 the RapNet trading network stopped listing diamonds graded by it, a rare public move from inside the trade, which usually prefers to settle these things quietly. Two-to-three-grade gaps against GIA are the reason. If a report says EGL International, treat the printed grades as marketing.
3. EGL India
EGL India operates its own website and its own grading standards, independent of the US labs. We ran the same checks on it that we ran on the other EGL sites and came away with the same uninspiring result: thin content, no meaningful methodology published, nothing that lets an outsider audit how a grade was reached. Grades run soft, and Indian-market stones with EGL papers are common in estate and liquidation inventory.
Types of EGL USA Diamond Certificates
EGL USA issues several different report formats rather than one universal certificate, and the format tells you what was actually examined. Some cover the full 4Cs, some only analyze round diamonds, others are built for colored stones, lab-grown stones or light performance. Read the title at the top of the page before you read anything else.
1. EGL USA Diamond Certificate
The standard report. It covers color, clarity, carat weight, cut and the diamond inclusion types found in any stone submitted to the lab.
2. EGL USA Diamond Analysis Report
Issued for round diamonds only, and also called the Cut Grade report. It lists carat weight, clarity from FL to I, color, shape and cutting style, cut grade, finish, diamond fluorescence and a plot of the inclusions. It comes in more than one page format.
3. EGL USA Colored Diamond Report
Built specifically for colored stones, and the most widely used of the EGL USA colored-diamond documents. It describes the characteristics that only a fancy color diamond displays, rather than forcing it onto the D-to-Z scale.
4. EGL USA Colored Diamond Origin Report
This one addresses where the color came from. It states whether the color is natural, enhanced, or the result of high pressure high temperature (HPHT) treatment, the difference that decides whether a fancy color stone is worth thousands or hundreds.
5. EGL USA Envira Diamond Report
A standard report with a sourcing statement attached. It documents the sustainable or reclaimed origin of the stone, and where relevant the jewelry materials with it, and it is typically issued for heirlooms, reclaimed rare pieces and newly mined goods presented as conflict-free diamonds.
6. EGL USA 360 Diamond Report
The technical sheet of the range. It runs twelve criteria and light performance measurements, including table and depth percentages, pavilion angle, crown angle and height, culet size, girdle thickness, finish, brilliance, contrast and radiance.
7. EGL USA Lab-Grown Diamond Report
Issued for man-made stones. Lab-grown diamonds share the chemical, physical and optical properties of mined stones, so the report carries a Lab-Grown Identification section that records the growth method and the laser inscription on the girdle.
8. EGL USA Hearts and Arrows Diamond Report
This documents the facet pattern of hearts and arrows cutting: a ring of hearts seen through the pavilion, arrows seen through the crown. Branded super ideal lines are graded on the same principle, whether that was the old James Allen True Hearts range or Blue Nile’s Astor collection.
How Do You Check an EGL Certificate Online?
You check it on the website of the lab that issued it, because there is no single central EGL database. Read the report header first: EGL USA, EGL International and EGL India are separate operations with separate lookup tools. Then match the report number, the carat weight, the measurements and the laser inscription against the stone in your hand.
That verification step is worth doing, and it is also badly misunderstood.
Remember this: a lookup only confirms the report exists and describes the stone in front of you. It does NOT confirm the grades are right. The only way to test the grades is to send the diamond to GIA and read what comes back.
If you’d rather see how a lookup should work, our walkthrough on GIA certificate lookup covers the report number, the plot and the inscription check step by step.
Are EGL Certified Diamonds Worth Buying?
Not on the strength of the report. The stone itself can be genuinely beautiful, and the logo on the paper changes nothing about how it looks in daylight. What the paper changes is the price, because the grades printed on it are what the seller is charging you for, and EGL grades usually overstate the diamond.
Here’s the arithmetic that catches people. Looking for a colorless stone graded D, E or F color with VVS1 or VVS2 clarity, you might see a GIA-certified diamond at around $8,000, while a stone with those same grades on an EGL report is offered under $6,000.
Why the gap?
Because the actual qualities are almost certainly lower than the report states. Re-graded at GIA, that same stone can come back as an I or J color with VS2 or SI1 clarity, which is exactly what a sub-$6,000 diamond of that weight should cost.
You paid the correct price for a lesser stone and were told it was a bargain on a better one. In reverse, you could hunt an EGL stone graded three levels above what you actually want and hope it lands on target. We wouldn’t recommend that approach, and we’ve never met a buyer who enjoyed the gamble.
For the grade-by-grade breakdown of how far apart the two labs sit, read our comparison of EGL vs GIA diamond certificates.
Where Can You Find EGL Diamonds for Sale?
Mostly at independent local jewelers, estate and pawn dealers, and liquidation or auction listings. The major online retailers dropped them years ago and never went back. If a stone is priced temptingly low next to an EGL report and a “comparable to GIA” pitch, the report is doing the selling, not the diamond.
Don’t take our word for it. Open the report filter on Blue Nile’s diamond search and read the lab options for yourself. EGL is not among them.
James Allen didn’t list EGL stones either, back when it traded as its own site before folding into Blue Nile in 2026. The reputable retailers stick to GIA, AGS and IGI certified diamonds, for a reason you can now name yourself.
Summary: Final Words on EGL Certified Diamonds
NEVER buy a diamond on an EGL report alone. If the seller won’t send it to GIA, walk.
Choose GIA or AGS papers instead. GIA remains the strictest and most consistent grader in the business, and a GIA report is the only document that lets you compare two stones on equal terms. That’s the whole point of our diamond certification guide.
An EGL-graded stone is not fake and it is not worthless. It is simply worth less than the report suggests, and the discount you think you’re getting is the correction being applied to the grades.
Remember, the certificate is not the diamond. It’s the promise about the diamond, and a promise is only as good as whoever made it.
Frequently Asked Questions on EGL Certification
What does EGL mean?
EGL stands for European Gemological Laboratory, a for-profit diamond grading network founded in Europe in 1974. It is not one lab. Separately owned laboratories in the US, Israel, India, South Africa and Europe share the name and grade to their own standards.
Is EGL certification good?
No, not by the standard we’d hold a report to. EGL grades typically run 1 to 3 grades softer than GIA on color and clarity, and the network has no single published methodology you can audit. Buy the stone, never the paper.
How do EGL and GIA grading differ?
GIA grades to one documented standard across every one of its labs, and its scale is the industry reference. EGL labs each set their own protocols, hand out friendlier grades, and even added an SI3 clarity grade that GIA does not recognize.
How do you check an EGL diamond certificate online?
Read the report header to see which lab issued it, then use that lab’s own lookup tool. EGL USA, EGL International and EGL India are separate operations with no shared database. Match the report number, weight, measurements and laser inscription.
Is EGL USA better than EGL International or EGL India?
Yes, by some distance. EGL USA grades tightest of the three and has worked to separate itself from the rest of the name. EGL International is the least trusted, and RapNet stopped listing its graded stones in 2014.
Are EGL certified diamonds cheaper?
They list cheaper, but they aren’t better value. A stone shown as D-to-F color and VVS on an EGL report near $6,000 often re-grades at GIA around I or J color with VS2 or SI1 clarity, which is what that price actually buys.
Does Blue Nile sell EGL certified diamonds?
No. Open the report filter on Blue Nile’s diamond search and EGL isn’t offered as an option, because the major online retailers stick to the labs whose grades hold up on re-examination.
Still not sure where to buy your diamond?
We always recommend shopping diamonds online, and we wrote a full guide to shop diamonds like a pro to walk you through it.
For loose stones with reports you can verify, feel free to browse Blue Nile’s loose diamond inventory, filter by lab, and read the certificate before you read the price tag.
