Every stone.
One independent standard, applied to every stone that crosses our bench, sealed, registered, and verifiable for as long as the diamond exists.
Report number
Carat weight
Proportions
The 4 C’s
Girdle inscription
Plotted diagram
QR verification
Inside every
A DGI report isn’t paperwork. It’s a stone’s identity, examined by hand, graded to the world’s standards, and kept on record for life.
10× magnification
Every stone is examined under a corrected loupe and binocular microscope.
QR verification
Confirm authenticity instantly against our live online registry.
Security features
Built-in safeguards on every report, designed to protect against forgery.
International grading
Colour D–Z and clarity FL–I3, aligned to global standards.
Four layers of
A grade is the beginning, not the end. Every stone we certify is identified, inscribed, sealed and verified, protected from our bench to the day it changes hands.
Identified
Several gemologists examine every stone, never just one. Trained eyes and the finest instruments must agree before your report is signed.
Inscribed
An optional Dia-Script laser mark on the girdle, your report number, or words of your own. Lasting proof that this is the stone you chose.
Sealed
The Diamond Seal locks stone and report into one tamper-evident capsule, it cannot be opened without showing it.
Verified
Every report lives in our registry for life. Anyone, anywhere, can confirm it in seconds.
Intake
Each item is logged, weighed and photographed under controlled lighting.
Examination
Assessed under 10× magnification with calibrated lab instruments.
Grading
Graded to international standards and independently double-checked.
Certificate
A sealed certificate is issued with a unique number and QR code.
Verification
Confirm authenticity anytime against our live online registry.
Watch a stone become
Every item is examined and graded by several gemologists, pairing trained human judgement with calibrated gemological instruments, then recorded permanently and made verifiable online. Choose a diamond or a piece of jewelry to follow the report as it is built.
Logged & weighed
Each item is registered, weighed and photographed under controlled lighting.
Examined at 10×
Inspected under magnification with calibrated gemological instruments.
Graded to standard
Characteristics graded to international standards, independently double-checked.
Sealed & numbered
A certificate is issued with a unique report number, ready to seal.
Recorded for life
Filed in our registry permanently, confirmable online at any time.
Diamond Report Jewelry
Report No. 666680099066 No. assigned on issue
- Weight3.00 ct
- Shape & CutRound Brilliant
- Measurements3.44–3.54 × 2.54 mm
- ProportionsDepth 66% · Table 55%
- PolishVery Good
- SymmetryVery Good
- Cut GradeExcellent
- CuletNone
- ClarityVS2
- ColourF
- FluorescenceNone
- Comments8 Hearts & 8 Arrows
- Metal characteristicsExamined
- Stone(s) characteristicsGraded
- General informationRecorded
- Photo / diagramIncluded
- Dia-Script (if present)Imaged
Dia-Script
Laser inscription on the girdle, the report number and logo, or a personal message. Match the stone to its report at a glance. A safe, risk-free procedure.
Diamond Seal
The stone sealed inside a tamper-evident transparent capsule. It cannot be opened without leaving evidence, proof the diamond inside is the diamond we examined.
Appraisal
An estimated replacement value in US dollars, based on the current Rapaport price list, shown in figures and in words. An estimate, not an official evaluation.
An illustration of our examination workflow. Each item is graded by several gemologists using calibrated gemological instruments, kept on permanent record, and made available through DGI’s online verification. Values shown are a sample. Appraisals are estimated replacement values per the current Rapaport price list and are not an official evaluation.
What a stone
A DGI report goes past the grade. Here is what our examination uncovers, and states plainly on the certificate.
Natural, lab-grown or treated
We determine whether a diamond is earth-mined or laboratory-grown, and detect treatments such as clarity enhancement or laser drilling, each stated clearly on the report.
Colour & fancy colour
Graded on the international D–Z scale, and fancy colours identified and graded, the hue and its intensity recorded on the report.
Cut & light performance
Full proportions diagram with polish and symmetry, and a Hearts & Arrows analysis where the cut earns it.
Imaging on every report
A photograph or diagram of the item appears on every report, together with an image of the Dia-Script inscription when one is present.
Gemstones & jewellery
Beyond diamonds, we identify and grade coloured gemstones and complete pieces: the metal, the mounted stones, and the jewel as a whole.
Six ways to certify a stone
A full laminated certificate. A card that fits a wallet. A laser mark. A tamper-proof seal. Take one, or layer them all. Built around the way the trade actually works.
Full Certificate
The complete record, every 4C, proportion and comment on a laminated A4, dressed in a folder worthy of the stone.
Mini-Cert
The full report, scaled down and folded close to card size, all the detail, less to carry.
Cert-Card
Every essential, the size of a credit card, slips into a wallet, or rides with the piece in the box.
Appraisal
A replacement value in US dollars, set to the current Rapaport list, written in figures and in words, so nothing is misread.
Dia-Script
Your report number etched into the girdle by laser, or a name, a date, a few words of your own. The stone signs its own identity.
Diamond Seal
Stone and report, locked in a capsule that can’t be opened quietly. Proof that travels with the diamond.
Sized to the
Take the certificate in the format that fits, a full A4 dossier, a compact A5, or a pocket-sized A6. Chosen by the piece, by the parcel, by how it will travel.
Jewelry
A4 · A5 · A6Diamonds
A4 · A5The
The strongest promise we can make about a stone. We lock it inside a clear capsule with its own report, and the capsule cannot be opened without showing it. What you see sealed is, beyond argument, the stone we examined.
- The diamond and its report, sealed as one.
- Tamper-evident, any opening leaves a trace.
- A clear trust signal your buyers can see.
Trusted where trust is
We work inside the trade, yet we never trade. We grade the stone; we never sell it. That independence is the entire point.
Certified gemologists
Every stone assessed by hand under 10× magnification and lab instruments.
Inside the Exchange
Located within the Ramat Gan Diamond Exchange, at the heart of the diamond trade.
Independent & impartial
We document a stone’s identity, we don’t buy or sell stones.
Globally aligned
Internationally recognised colour (D–Z) and clarity (FL–I3) scales.
Your name
As the gemological laboratory of the Ramat Gan Diamond Exchange, we work exclusively with the trade, dealers, manufacturers and jewelers. What follows is simply what your stones gain by it.
Submit a parcel-
01
An authority, not a slip of paper
Recognized by the Israeli Diamond Controller, from inside the Exchange, a name the trade already trusts.
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02
Natural or lab-grown, stated plainly
We identify earth-mined from laboratory-grown and flag any treatment, no question left at the counter.
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03
Your reputation, protected
A Dia-Script inscription and the tamper-evident Diamond Seal bind each stone to its report, and your name to both.
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04
Verifiable for life
Every report stays on permanent record, confirmable by QR and report number, for as long as the stone exists.
Verify a
Every DGI report has a number and a code. Enter one, or scan the other, and confirm in seconds that the certificate in your hand is genuine, and ours.
Frequently asked
Short, plain answers to the questions we hear most. Still unsure about your stone? The lab will walk you through it.
Enter the report number on our verification page, or scan the code on the certificate. In seconds you’ll see the very record we hold, or you’ll know something is wrong.
No. A DGI report proves what a stone is, its identity and its grade. It does not prove whose it is.
It means the stone was treated to improve how its clarity looks. When that is the case we say so plainly, in the report’s comments. Nothing hidden.
Yes. Every report states the stone’s origin in plain words, for example, “Earth Mined.” Tell us what you’re submitting and we’ll guide you.
Both depend on the stone and the services you choose. Talk to the lab, you’ll have honest timing and a clear price before we begin.
Often, yes, many insurers accept a gemological report for appraisal and cover. Confirm the exact requirements with your insurer.
Contact the lab
Location
Israel Diamond Exchange · Noam Building, 23 Tuval St.
Floor 13 · Ramat Gan, Israel
Phone
Hours
Sunday–Thursday · 9:00–18:00