A diamond certificate tells you exactly what you are buying — if you know what to look for. Here is a clear, step-by-step guide to verifying your lab-grown diamond certificate, from the QR code to the BIS hallmark.
Why Certification Matters
Why Certification Matters
Certification is what separates a verified fine jewellery purchase from an unverified one. A certificate from a recognised gemological laboratory — SGL (Solitaire Gemmological Laboratories) in India, or IGI internationally — documents the diamond's origin, its 4C quality grades, the jewellery's metal details, and provides a unique certificate number for verification.
Without certification, there is no independent confirmation of what you are buying. For lab-grown diamonds specifically, the certificate also explicitly states that the diamond is laboratory-grown — which is important for transparency and honesty in the purchase.
For more on the importance of certification, see our complete guide to lab-grown and natural diamond comparison.
What Details Should
What Details Should You Check?
When you receive your jewellery and its accompanying certificate, check the following:
- Certificate number — A unique identifier. Keep this for your records.
- Diamond origin — Should clearly state "laboratory grown" or "lab-grown." This confirms transparency about what you purchased.
- Diamond weight — The carat weight of the diamond(s). Confirm this matches what was communicated at purchase.
- Colour and clarity grade — These are the 4C grades assigned by the laboratory.
- Jewellery gross weight — The total weight of the finished piece including the metal setting.
- Gold purity — Expressed as 14Kt, 18Kt, or 9Kt depending on the piece. This should match the description.
- Metal stamp — A hallmark stamped on the piece itself (visible on the inside of a ring, the clasp of a bracelet, etc.) confirming the metal purity.
- BIS hallmark — India's Bureau of Indian Standards hallmark on all gold jewellery. This is one of the strongest guarantees of gold quality available to Indian buyers.
- QR code — A scannable code that links to the digital verification of the certificate.
Use the QR
How to Use the QR Code
Every SGL certificate includes a QR code that you can scan using your phone's camera or a QR scanner app. Scanning the code takes you to a digital record of the certificate on the SGL verification portal. This allows you to confirm that the physical certificate you hold matches the laboratory's records — verifying that the certificate is genuine and not a copy or forgery.
What Stella Customers
What Stella Customers Receive
With every Stella Fine Jewellery purchase, you receive:
- An SGL jewellery report documenting the diamond origin, weight, and quality
- A BIS hallmark on all gold jewellery confirming metal purity
- A QR code for digital certificate verification
- Complete documentation that is yours to keep permanently
If any detail on your certificate is unclear or if you have questions about your jewellery's documentation, our team is available on WhatsApp to help you review it together.
Verify Your Lab-Grown
How to Verify Your Lab-Grown Diamond Certificate
- Locate the certificate number — Find the unique certificate number printed on your SGL report. Note it down or photograph it.
- Scan the QR code — Use your phone camera or QR scanner app to scan the QR code on the certificate. This will open the SGL verification portal.
- Match the diamond weight — Confirm that the carat weight shown on the portal matches what is printed on your physical certificate and what was stated at the time of purchase.
- Check the diamond origin — The record should clearly indicate "laboratory grown." This confirms transparency about the stone's source.
- Confirm jewellery gross weight and metal details — Verify the total jewellery weight and gold purity match the description in your order confirmation.
- Contact Stella if anything is unclear — If any detail does not match or is confusing, message us directly and we will walk through the certificate with you.
Browse our certified lab-grown diamond rings and lab-grown diamond earrings — all SGL certified, BIS hallmarked, and shipped with full documentation.
Still have questions about your certificate? Message us on WhatsApp — we are happy to walk through it with you.
