Every diamond tells a story of brilliance & each SGL report represents more than a grade; it’s a complete analysis of your diamond’s identity.
Here’s how every diamond is examined before receiving its
official SGL certification
Your diamond is first placed on a high-precision Mettler Balance to determine its exact carat weight, down to the smallest decimal.
We capture a unique digital “DNA” of your diamond by mapping its optical and structural features, ensuring it can be accurately identified forever.
AI-powered DiaScreen distinguishes natural from lab-grown diamonds using photoluminescence.
FTIR (Fourier Transform Infrared Spectroscopy), where infrared light interacts with its atomic structure & examines the diamond’s atomic bonds and nitrogen aggregation states.
A precise 3D scan measures every facet and angle, determining how perfectly the diamond is cut and how brilliantly it sparkles.
SGL analyses how light travels through your diamond, measuring its Fire, Brilliance, and Scintillation to translate beauty into precise, measurable performance.
Your diamond’s colour is evaluated under controlled daylight conditions against master stones, ensuring accurate and standardized grading from D (colourless) to Z.
Expert analysis under 10x magnification identifies inclusions and blemishes to establish clarity grade.
Fluorescence is evaluated under UV light to understand how the diamond appears in varying lighting environments.
A precise diagram maps every inclusion, forming a transparent and traceable visual fingerprint of the diamond.
The diamond's girdle is laser-inscribed with its SGL certificate number, securely linking it to the report.
Your diamond is photographed from every angle to create a detailed 360° video, allowing you to examine its cut, symmetry, and brilliance with complete transparency.
Verified diamond data and visuals are documented in the SGL Certificate System with a unique report number.
