Natural Diamond Report
Natural Diamond Mini Report With Plot
Natural Diamond Mini Report With Proportions
Lab Grown Diamond Reports Content
Lab Grown Diamond Mini Report with plot
Lab Grown Diamond Mini Report with proportions
Natural Solitaire Diamond Jewellery Report
Natural Diamond Jewellery Report
Natural Diamond and Colored Gemstone Jewellery Report
Rosecut, Uncut or Polki Diamond Jewellery Report
Lab Grown Solitaire Diamond Jewellery Report
Lab Grown Diamond Jewellery Report
Colored Gemstone Report
Colored Gemstone Jewellery Report
Natural Diamond and Colored Gemstone Jewellery Report
SGL Labs is a leading diamond certification lab that offers state-of-the-art diamond identification and grading services. We use the latest technology from around the world to make this possible and create flawless and accurate diamond reports. Our network of 25 laboratories helps us service the key diamond trading centers of London, New York, Dubai, and Mumbai.
An SGL natural diamond certificate shows the quality and features of a natural diamond. Each report includes the diamond’s 4Cs: Carat Weight, Colour, Clarity, and Cut (where applicable). It also includes details like properties, polish, symmetry, fluorescence, and a plotting diagram.
Qualified gemologists examine every diamond using advanced laboratory tools and trusted grading standards. An SGL Diamond Report helps buyers, jewellers, and industry professionals understand a diamond’s quality and key features. It also makes verification and future transactions easier.
Every SGL natural diamond grading report contains the essential information about your diamond’s quality, characteristics, and authenticity. Here’s what you’ll find on an SGL diamond certificate.
Report Element | What It Tells You |
|---|---|
Unique SGL Report Number
| Your diamond has a unique number. Use it to verify your SGL certificate online anytime.
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Diamond Shape & Cutting Style
| It shows the diamond’s shape (like Round, Princess, Oval, or Emerald) and its cut. This helps with its setting and value.
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Measurements | It shows the diamond’s exact size in millimetres, including its length, width, and depth. These measurements are taken using accurate laboratory tools.
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Carat Weight
| It shows the diamond’s exact carat weight up to two decimal places. Carat weight plays a big role in the diamond’s value.
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Colour Grade
| It shows the diamond’s colour grade on the D-to-Z scale, from D (colourless) to Z (noticeable colour). The colour is checked by qualified gemologists under standard lighting.
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Clarity Grade
| It shows the diamond’s clarity grade, from Flawless (FL) to Included (I3). Qualified gemologists check the clarity under 10x magnification.
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Cut Grade
| It shows the cut grade for Round Brilliant diamonds. The cut affects the diamond’s shine and overall look.
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Polish Grade
| The polish grade shows how well the diamond was polished after cutting. Good polish helps the diamond shine better.
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Symmetry Grade
| Shows how well the diamond’s facets are aligned. Better symmetry helps the diamond shine better.
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Fluorescence | Shows how much the diamond glows under UV light, from None to Very Strong. It also helps you understand how it looks in different lighting.
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Nature of Origin
| It shows whether the diamond is natural or laboratory-grown. SGL checks this using advanced testing technology.
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Plotting Diagram
| The plotting diagram shows the diamond’s inclusions and surface marks. This pattern is unique to every diamond.
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Proportion Diagram
| Shows the diamond’s key proportions, like table, depth, girdle, and culet. It gives a clear view of the diamond’s cut.
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Proportions Grade
| Shows the overall cut grade for Round Brilliant diamonds. It tells you how well the diamond matches ideal cutting standards.
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Security Features
| The certificate includes a QR code, 3D hologram, UV micro-text, and security paper. These features help protect the certificate from copying or forgery.
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SGL provides three natural diamond report formats: the Natural Diamond Report, the Natural Diamond Mini Report with Plot, and the Natural Diamond Mini Report with Proportions. Your jeweller or the SGL team can help you choose the right report for your diamond.
Explore The SGL Way to see how every SGL diamond is examined and certified, from origin screening to the final report.
On every SGL natural diamond certificate, colour is graded from D (colourless) to Z (noticeable warm colour). Here is a simple buyer’s guide.
Colour Range | What It Means for Buyers |
|---|---|
D, E, F
| Colourless and the highest colour grade. Very rare and best for platinum or white gold settings.
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G, H, I, J
| Near-colourless and the most popular colour range. Looks colourless to the naked eye and offers great value.
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K, L, M
| Faint colour with a slight warm tint that is easier to notice. Often paired with yellow gold settings, where the warm colour matches the metal.
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N–Z
| Noticeable colour with a clear warm tint. These diamonds are much more affordable. Some buyers choose them because of their warm or golden colour.
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Clarity grades are checked under 10x magnification. Here’s a simple explanation of each clarity grade:
Clarity Grade | Plain-English Meaning |
|---|---|
FL / IF (Flawless / Internally Flawless)
| No inclusions or surface marks are visible under 10x magnification. This grade is very rare and found in less than 1% of diamonds.
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VVS1 / VVS2 (Very Very Slightly Included)
| Minute inclusions are extremely difficult to see under 10x magnification. Excellent choice for high-end jewellery.
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VS1 / VS2 (Very Slightly Included)
| Small inclusions that are hard to spot under 10x magnification. This is a very popular choice because it offers a great balance of appearance and value.
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SI1 / SI2 (Slightly Included)
| Noticeable inclusions under 10x magnification. SI1 usually looks clean without magnification, while SI2 may have visible inclusions.
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I1 / I2 / I3 (Included)
| Visible inclusions without magnification. I1 may still be a good choice for fashion jewellery, while I2 and I3 have more noticeable flaws.
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SGL provides free online verification for every diamond grading report, available to anyone, anytime. Whether you’re buying a diamond, verifying its details, or checking a certificate you already own, SGL report verification makes it easy. It helps you verify the information with confidence.
Find the unique report number printed at the top of your SGL diamond certificate. This number is linked to your diamond and is securely saved in SGL's database.
Go to sgl-labs.com and find the report verification box on the homepage. If your device can scan QR codes, you can skip directly to Step 3.
Use your smartphone camera to scan the QR code on your SGL certificate. It takes you straight to your verified report in SGL's database. You can also enter your report number manually in the verification search box.
Check the details shown, including the shape, carat weight, colour grade, clarity grade, and report number. Make sure every detail matches your physical certificate.
All SGL diamond reports are freely available to view, download, and share as a PDF. No account or payment is required.
Choosing the right diamond certification laboratory and certification services is as important as choosing the diamond itself. Here is what sets SGL apart.
SGL Advantage | Why It Matters to You |
|---|---|
25 Global Laboratories
| SGL operates laboratories across major diamond hubs, including London, Dubai, New York, Mumbai, and other key locations. Wherever you trade your diamond, the industry recognises and respects an SGL certificate. Our local laboratories offer faster service without compromising on international grading standards.
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Blind-Grading & Client Confidentiality
| Our gemologist evaluates every diamond without considering the client’s identity, the price paid, or the client’s expectations. We use a barcoded intake system to separate each stone from its owner, allowing our gemologists to grade each diamond without bias.
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Advanced Lab-Grown Detection Technology
| SGL uses advanced spectroscopic and photoluminescence instruments to identify natural and lab-grown diamonds. As lab-grown diamonds become more common, accurate identification plays a more important role than ever.
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Globally Recognised Certificates
| Buyers, jewellers, insurers, and diamond traders worldwide recognise and trust SGL diamond reports for their international credibility and reliable grading.
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Free Online Verification Always
| We let anyone verify any SGL certificate online for free. Scan the QR Code or enter the report number without creating an account, subscription, or fees required.
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Multi-Layer Certificate Security
| SGL uses QR codes, 3D holograms, UV micro-text, and tamper-evident security paper, making them among the industry’s most secure certification documents.
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Term | Meaning |
|---|---|
Carat Weight
| Shows the diamond’s weight in carats, where 1 carat equals 0.2 grams. Every SGL report records it to two decimal places.
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Colour Grade
| Graded on the D-to-Z scale, where D is the highest colour grade and completely colourless. Qualified gemologists check it under standard lighting.
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Clarity Grade
| Measures the diamond’s internal inclusions and surface marks under 10x magnification. Graded from Flawless (FL) to Included (I3).
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Cut Grade
| Shows how well the diamond has been cut and how it affects its shine and sparkle. Applies to Round Brilliant diamonds only.
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Polish | Measures the finish of each diamond facet after cutting. It is graded from Excellent to Poor.
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Symmetry | Checks how well the diamond’s facets are aligned. Graded from Excellent to Poor, with higher grades giving a more even look.
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Fluorescence | It shows how the diamond reacts under UV light. It is graded from None to Very Strong and recorded on every SGL diamond certificate.
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Plotting Diagram
| A visual map of the diamond’s unique internal and surface features. It serves as the diamond’s permanent fingerprint.
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SGL Labs offers trusted diamond certification services worldwide, including diamond certification in India through our Mumbai laboratory.
Peace of mind, assured is not just a motto for SGL, it is a promise of trust and reliability. Every certificate issued from our end is safeguarded and secured with various layers of protection, setting higher benchmarks for fair trade and professionalism.
SGL reports are freely available to view, verify and download. All the SGL certification data is maintained systematically and can be presented on demand as a right to consumer perusal limited to the certificate.
Providing professional diamond identification and grading services backed with the latest technology SGL is at the front end of the laboratory-grown diamond detection scenario. SGL’s specialized services and laboratory-grown detection instruments help in the easy identification of natural diamonds.
UV text visible under UV/Blacklight, Secured 3D holograms and a special paper make the SGL certificate a document that cannot be tampered with or easily duplicated. The diamond sealing also displays many tamper-evident features to provide peace of mind.
No efforts are spared to maintain client confidentiality, anonymity, and an unbiased grading report. SGL follows a system of barcodes and software modules to ensure the grading and processing of diamonds and their certificates are undertaken without any knowledge of the client details.
We provide unique additional services as per the consumer demands; tailored for your needs to add value to your diamond.
For further information, contact your nearest SGL Branch.
Hearts & Arrows is an overview of a diamond’s reflective scope and physical characteristics, carried out with a detailed assessment of its cut and overlapping projections.
SGL tested diamonds carry laser inscribed numbers, letters, trademarks, and logos on the girdle of a diamond allowing the diamond to be easily identified. The inscription is visible under 10x magnification.
Diamond Sealing is the ultimate security tool and ensures complete transparency and assurance of a diamond vis-à-vis the colour, clarity and cut grade.
Diamond certification is a process by which a diamond is evaluated and judged for its quality. This is done by checking the diamond’s 4Cs – Cut, Carat weight, Clarity, and Color. The diamond must pass several tests, including being cut and polished to the highest standards, and showing no signs of blemishes or inclusions. Diamond grading reports assure the buyer about the authenticity of the jewellery piece or loose diamond he’s purchasing.
You can contact the nearest SGL Lab branch to get your diamonds certified. We have a network of 25 labs across the globe in key cities such as London, New York, Mumbai, Dubai and many more. You can also ask your jeweller to procure an SGL certificate for a diamond piece that you are planning to purchase.
All types of diamonds in the jewellery industry can be certified using diamond grading services. This includes color diamond, natural diamond and lab diamonds. A diamond report includes clarity grades, color grades, carat weight, nature of origin, etc.
Yes, SGL diamond certificates are valid and recognized worldwide. Our diamond reports provide detailed characteristics of a diamond. SGL’s diamond certificates enable you to make informed purchasing decisions and ensure the authenticity and quality of the diamond.
Diamond certifications do matter significantly. They provide essential details about a diamond’s attributes. SGL’s diamond Certificates help establish the diamond’s value, quality, and authenticity, making it easier to compare and verify the diamond’s characteristics.
It is generally not advised to buy a diamond without a valid certificate, as there is no other way to be sure of the characteristics and origin of the diamond. You should get your diamonds tested from a reputed diamond certification lab like SGL, to be sure that you know exactly what you are purchasing.
You can obtain a diamond certificate through your jeweler or the seller when you purchase a diamond. Simply request a certified diamond, and they should provide you with a certificate from a reputable gemological laboratory like SGL. This document will contain detailed information about your diamond’s characteristics, ensuring transparency and authenticity in your purchase.