Diamond grading report
Cut, colour, clarity and carat weight graded and documented for natural and lab-grown diamonds.
Certainty for every diamond and gemstone you buy, sell or wear
Gemaura Gem Testing Lab is a gemological laboratory built on one idea: people invest in diamonds, studded jewellery and gemstones with trust, and that trust should be backed by accurate facts. Our gemologists, lab assistants and photographers examine every stone with precise instruments and document it clearly.
Manufacturers, retailers and final consumers rely on our reports to buy with confidence and wear their jewellery with surety.
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Laboratory services
From a single stone to a full jewellery lot, we test and certify what matters to you.
Studded jewellery certification
Every stone in a finished piece identified and recorded, with total weight and metal details.
Gemstone identification
Natural, synthetic or imitation. We identify coloured stones and report any treatments found.
Lab-grown and treatment screening
Parcel and single-stone screening to separate natural diamonds from lab-grown and treated ones.
Jewellery photography
Sharp macro images of stones and jewellery, ready for catalogues, listings and reports.
Gold/Silver/Platinum Jewellery
Certificate for retail/manufacturer/online traders for insurance, resale or estate needs, written by qualified valuers.
A report you can verify, anywhere
Each Gemaura report carries a unique report number and a stone photograph. Anyone can confirm it online in seconds, so a buyer, seller or insurer sees the same facts.
- Findings reviewed by more than one gemologist
- Tested with calibrated, professional instruments
- High-resolution photograph on every report
- Tamper-evident report with a unique number
- Online verification through QR scan
Trusted by the trade and by families
Frequently asked questions
Most single stones and jewellery pieces are completed within 2 to 3 working days. Large parcels may take longer, and we confirm timelines when you submit.
Select Verify Report in the menu and enter the report number printed on your certificate.
Yes. We identify and report natural, lab-grown and treated diamonds.
Yes. Contact us first and we will share the secure submission steps and insured courier options.
Yes, stones can be tested while set, as the mounting permits.
Terms & Conditions
This report is issued by Gemaura Lab and accepted by the client on the following terms and conditions:
This report is issued to the client on his/her accepting the terms and conditions of Gemaura Lab for gemstone/diamond/diamond jewellery identification as they appear when submitted to Gemaura Lab by the client. A gemstone/diamond/diamond jewellery can be treated, modified, re-cut or rearranged to enhance its colour and clarity at any time. Therefore the conclusion/observation of this report reflects the findings as of the time it is issued. Tests which are not applicable, not possible or not useful in identification are not performed.
This certificate does not indicate whether the stone has been treated or not to its present colour/clarity by any process whatsoever, unless otherwise specified.
We do random checks only. We are not responsible for a stone if heated or treated, or if a similar-appearing different product with the same specifications mentioned in the report is supplied, especially in the case of crystal bracelets, mala and artefacts. Gemaura Lab identifies and observes carefully with specialized instruments and prepares its report to the best of the employees' knowledge and professional standards.
Opinions may reasonably vary as to the characteristics covered in this report. Therefore, neither Gemaura Lab nor any member/staff/representative shall, at any time, be held responsible for any discrepancy/damage/loss which may be caused due to this report.
This report is provided upon the request of the client and/or the owner of the gem, and by agreeing to the terms and conditions of Gemaura Lab related to the report. By making this report Gemaura Lab does not agree to purchase or replace the gem. Neither the client nor any purchaser of the gem shall regard this document as any form of valuation, guaranty or warranty.
In the event of any claim by the client or any other person for damage to the gem or damage resulting directly or indirectly from this report, the liability of Gemaura Lab shall be limited to the amount it received as a fee in connection with this report.
Gemaura Lab is in no way responsible for possible dissimilarities and/or differences that could appear from repeated examination, as a result of other methods applied, or for possible inaccuracy due to technical/mechanical defects/errors of the instruments/equipment used or examined by anyone else.
The same details may appear on similar-looking bracelets/mala/artefacts as they are certified in bulk and randomly checked.
The certificate is not a valuation in any form and does not pertain to the quality of the stone or its cutting. It is only an identification/observation report.
Any dispute arising out of this report falls within the jurisdiction of the law courts of Mumbai only.
All testing will be done at the product owner's risk.
Contact us
Tell us what you need tested and our team will get back to you shortly.
- 801, Floor 8, Plot 175, Cotton Exchange Building,
Kalbadevi Road, Bhuleshwar, Kalbadevi, Mumbai - 400002 - +91 97022 75199
- gemauralab@gmail.com
- Mon to Sat, 12:30 pm to 6:30 pm