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.


Security Features

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. 


QR Code

UV & Micro text

Security Paper


Access to data

SGL lab-grown Diamond reports are freely available to view, verify and download. All the SGL lab-grown certification data is maintained systematically and can be presented on demand as a right to consumer perusal limited to the certificate.


Providing professional lab-grown 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 specialised services and laboratory-grown detection instruments help in the easy identification of natural diamonds.

Security features

UV text visible under UV/Blacklight, Secured 3D holograms and a special paper make the SGL lab-grown certificate a document that cannot be tampered with or easily duplicated. Our diamond sealing also displays many tamper-evident features to provide peace of mind.

Client anonymity

At SGL, we go above and beyond to maintain client confidentiality. We use a system of barcodes and software modules to ensure that the grading and processing of diamonds and their certificates are done without any knowledge of the client’s details. This allows us to provide our clients with unbiased grading reports.

Additional Services

We provide unique additional services; tailored for your needs to add value to your diamond.

For further information, contact your nearest SGL Branch.

Hearts & Arrows

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.

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Laser Inscription

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.
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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.

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