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 provider of lab-grown diamond certification services .
Our certificates provide a comprehensive analysis of laboratory-grown diamonds, including their origin, quality, and authenticity.
Our lab-grown diamond report contains the analytical result of the diamond’s 4Cs, including carat weight, color, clarity, and cut.
In addition, the certificate provides information on the diamond’s origin (lab grown or natural), and a plotting diagram of the diamond’s physical characteristics, both internal and external.
At SGL Labs, we are committed to providing impartial and unbiased evaluations of lab-grown diamonds. Our diamond certificates are widely accepted in the industry and provide consumers with the confidence they need when purchasing lab-grown diamonds.
A lab-grown diamond report is SGL’s certification of a laboratory-created diamond’s quality, origin, and authenticity. It confirms the diamond’s 4Cs (carat weight, clarity, colour, and cut) and its growth method. It also shows a diagram of the diamond’s internal and external features. It is widely accepted by jewellers and buyers across the industry.
SGL uses the same 4Cs to grade lab-grown and natural diamonds, so buyers can compare quality on equal terms. Every report confirms the diamond’s origin using SGL’s detection tools. These tools help tell lab-grown diamonds apart from natural ones very accurately.
Our network of 25 labs across India (21 locations), Dubai, London, Dhaka, and Kathmandu certifies lab-grown diamonds. Each lab follows the same blind grading, client privacy, and security checks as we do for natural diamond reports. This helps jewellers and buyers trust the same standard across every type of diamond.
Every SGL lab-grown diamond report contains the same core grading data as a natural diamond report, plus origin-specific details unique to laboratory-created stones.
Report Element | What It Tells You |
|---|---|
Unique SGL Report Number | Your diamond has a unique number that you can use to verify your SGL certificate online anytime. |
Nature of Origin
| Confirms the diamond is laboratory-grown and verified using SGL’s advanced detection technology rather than visual checks alone.
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Growth Method (HPHT or CVD) | Shows whether the diamond was grown using High Pressure High Temperature or Chemical Vapor Deposition, when requested.
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Carat Weight
| Gives the diamond’s exact weight to two decimal places, recorded the same way as a natural diamond report.
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Colour Grade
| Shows the diamond’s colour on the D-to-Z scale, from colourless to a noticeable warm colour.
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Clarity Grade
| Rates clarity from Flawless (FL) to Included (I3), checked under 10x magnification.
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Cut Grade
| Shows the cut grade for Round Brilliant lab-grown diamonds, based on their proportions and finish.
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Measurements & Proportions
| Records exact length, width, and depth, plus a proportion diagram showing table, depth, girdle, and culet.
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Polish & Symmetry
| Shows how well the diamond was finished and how evenly its facets are aligned.
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Fluorescence | Tells how the diamond reacts under UV light, from None to Very Strong.
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Plotting Diagram
| Shows the diamond’s inclusions and surface features, which are unique to each stone
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Post-Growth Treatment (if applicable)
| Shows any treatment done after growth to improve the diamond’s colour or clarity, if present.
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Security Features
| Includes a QR code, 3D hologram, UV micro-text, and security paper to help stop certificate forgery.
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SGL issues lab-grown diamond reports in different formats. These include the standard Lab-Grown Diamond Report, Mini Report with Plot, and Mini Report with Proportions. Your jeweller or the SGL team can help you choose the best report for your diamond.
Lab-grown diamonds are created using two methods: High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). Both methods create diamonds with the same chemical, physical, and optical properties as natural diamonds, and SGL grades both using the same 4Cs scale.
Method | How it works | On your SGL report |
|---|---|---|
HPHT | Uses extreme pressure and heat of about 1,500°C inside a press to recreate natural diamond formation.
| Growth method given on request; graded the same as any lab-grown stone.
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CVD | Makes a diamond layer by layer using carbon-rich gas heated to around 800°C inside a vacuum chamber.
| Growth method is shown on request; graded the same as any lab-grown stone.
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Neither method changes whether a diamond is genuine or how it is graded. SGL’s report reflects the diamond’s actual graded quality, no matter which process created it. For a full breakdown of each method, read our guide: What Are Lab-Grown Diamonds?
SGL checks whether a diamond is natural or laboratory-grown using spectroscopic and photoluminescence testing not just visual inspection. This testing happens before grading and does not depend on the client’s declared origin. The “Nature of Origin” field reflects a verified result, not a claimed one. Read more about how lab-grown diamonds are identified on our blog.
Lab-grown diamonds are graded on the same D-to-Z colour scale and FL-to-I3 clarity scale used for natural diamonds
Grade Range | What It Means for Buyers |
|---|---|
D–F (Colourless) | Highest colour grade, rare, and a great choice for white gold or platinum.
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G–J (Near-Colourless)
| Most popular range, looks colourless to the eye.
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K–M (Faint)
| Shows a slight warm tint, often paired with yellow gold.
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N–Z (Noticeable)
| Has a warm tone that is easy to see and is more affordable.
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FL–VVS (Flawless to Very Very Slightly Included)
| No inclusions are visible to the eye, making it high-end.
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VS–SI (Very Slightly to Slightly Included)
| Shows minor inclusions, offers good value, and is a popular choice.
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I1–I3 (Included)
| Shows visible inclusions and is more affordable.
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Clarity grades are assessed under 10x magnification using the same scale as natural diamonds. For the full explanation of each clarity grade, see the Clarity Grade guide on our Diamond Reports page.
SGL lets you check all lab-grown diamond reports online for free. Use these steps to check your SGL diamond certificate:
Find the unique report number printed on your SGL lab-grown diamond certificate. This number is linked to your diamond and safely stored 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, skip to Step 3.
Scan the QR code on your certificate using your phone camera. It takes you directly to your verified report in SGL's database. You can also type your report number manually in the verification search box.
Make sure the report number shape, carat weight, colour, clarity, and Nature of Origin field saying "Laboratory-Grown" match your certificate.
All SGL lab-grown diamond reports are free to view, download, and share as PDFs. You do not need an account or payment.
Choosing a certified lab-grown diamond matters just as much as choosing the diamond itself. Here’s what an SGL report protects you from.
What You’re Protecting | Why It Matters to You |
|---|---|
Origin Confirmation
| A lab-grown diamond looks just like a natural one without lab testing. An SGL report gives buyers verified proof of origin instead of just trusting the seller’s word.
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Fair Pricing
| Lab-grown diamond prices depend on the carat, colour, and clarity. A certified report helps buyers avoid paying natural-diamond prices for an uncertified stone. It also helps avoid overpaying for a lab-grown stone with grades that are claimed to be higher.
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Resale & Insurance
| Jewellers, insurers, and resale buyers need a certified report to confirm what they are valuing. An SGL certificate makes the process easy.
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Growth Method Transparency
| Buyers increasingly want to know how their diamond was made. SGL lists the growth method on request, giving buyers complete details about their purchase.
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Term | Meaning |
|---|---|
HPHT (High Pressure High Temperature) | A way to grow diamonds using high heat and pressure, like natural diamonds.
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CVD (Chemical Vapor Deposition)
| A method that grows diamonds layer by layer in a chamber with carbon-rich gas.
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Nature of Origin
| The report section that tells you if a diamond is natural or lab-grown.
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Post-Growth Treatment
| A process used after growth to adjust the colour or clarity of a lab-grown diamond.
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Laser Inscription
| A small number or text marked on the diamond’s edge, often showing “Laboratory-Grown.”
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Photoluminescence Testing
| A test that checks the growth signs and confirms if a diamond is natural or lab-grown.
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Growth Remnant
| A bit of metal or gas that may stay inside a diamond after the growth process.
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SGL Labs certifies lab-grown diamonds through 25 labs across India (21 locations), Dubai, London, Dhaka, and Kathmandu.
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.
A lab-grown diamond report is a certificate that provides grading details and important information about a laboratory-grown diamond. SGL certifies lab-grown diamonds by grading their 4Cs – cut, colour, clarity, and carat weight, along with origin, proportions, and other grading information.
SGL grades lab-grown diamonds by providing information about diamonds carat weight, color, clarity, cut, measurements, proportions, fluorescence, and plotting information. The report also confirms whether the diamond is lab-created and provides extra verification details for transparency and authenticity.
Certification for lab-grown diamonds helps in verifying a diamond’s authenticity, quality, and grading details. A certified lab-grown diamond report gives clear information about the diamond features and helps buyers make informed buying decisions more confidently.
Gemological laboratories grade lab-grown diamonds by following the same 4Cs grading standards as natural diamonds, covering cut, colour, clarity, and carat weight. During the grading process, laboratories such as SGL check additional diamond characteristics like proportions, symmetry, and fluorescence, along with the standard grading details.
Lab-grown diamonds are graded using the same 4Cs system as natural diamonds, including cut, colour, clarity, and carat weight. However, lab-grown diamond reports may also include additional information related to the diamond’s origin and characteristics.