Sealing

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. It is a great sales tool to promote genuine certified diamonds. The diamond seal is a tamper proof pack and thus prevents any attempted replacement of its contents. Sealing guarantees that a given certificate and the corresponding diamond belong together. It provides a consistent, categorical connection between the diamond and its certificate. The purpose of this special diamond seal is to develop an undoubtedly certainty of the contained stone is the one actually reported in the certificate. The SGL Diamond sealing is tamper-proof.

Watch for These Tamper Evident Security Features

An SGL diamond certification report with tamper-evident security features including a wavy blue pattern and safety seals to ensure gemstone authenticity.

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.

SGL security feature icon: A 3D hologram seal that safeguards the certificate against duplication.
Hologram
SGL security feature icon: A QR code for instant digital certificate validation and authenticity checks.
QR Code
SGL security feature icon: Specialized UV-visible text and micro-printing to prevent tampering.
UV & Micro Text
SGL security feature icon: Official security paper with a custom background for certificate protection.
Security Paper

Lab Policy

Access to Data

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.

Confidence

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.

Security Features

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.

Client Anonymity

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.

Additional Services

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.

SGL Hearts & Arrows service page: Detailed assessment of a diamond's reflective symmetry and cut precision.

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.

SGL Laser Inscription service page: Microscopic girdle inscriptions for diamond identification and tracking.

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.

SGL Sealing service page: Secure diamond sealing for complete transparency on stone color, clarity, and cut.

Sealing

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.