EU Registered Trademark · EUIPO No. 018XXXXXX

The European Standard
for Moissanite
Grading Reports

GRA – Gemological Research Association is the EU-registered trademark holder for GRA gemological grading reports. We provide independent, scientifically rigorous certification for lab-grown moissanite, trusted by jewellers and consumers across Europe.

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GRA Gemological Report
Moissanite Grading Certificate
  • EU Trademark Registration (EUIPO)
  • Independent Laboratory Assessment
  • Tamper-proof Digital Verification
  • Internationally Recognised Standard
  • Blockchain-ready Report IDs
EU Registered Trademark
Independent Grading
Tamper-proof Reports
Online Verification
Lab-grown Specialists
About GRA

The EU's Authoritative Voice in Moissanite Grading

GRA – Gemological Research Association is the registered trademark holder of the GRA brand in the European Union (EUIPO). We are the sole authorised issuer of GRA-branded gemological reports within the EU, providing a clear and legally recognised standard for the grading of lab-grown moissanite.

Our grading methodology follows internationally accepted gemological standards, assessing cut, colour, clarity, carat weight, polish, symmetry, and fluorescence. Each report is assigned a unique GRA Report Number and is verifiable online at Check.GRAcert.eu.

As the moissanite market grows across Europe, GRA provides jewellers, retailers, and consumers with the confidence of an independent, professional assessment backed by EU trademark law.

EU Trademark Protection: The GRA name and logo are registered trademarks under EU law. Unauthorised use of the GRA brand on gemological reports within the European Union constitutes trademark infringement.

GRA Logo
Our Services

What GRA Offers

From independent grading reports to digital verification, GRA provides the complete infrastructure for trustworthy moissanite certification in Europe.

Grading Reports

Comprehensive moissanite grading reports assessing cut, colour, clarity, carat weight, polish, symmetry, and fluorescence. Each report includes proportion diagrams and clarity characteristics.

Online Verification

Every GRA report can be instantly verified at Check.GRAcert.eu using the unique report number. Consumers and retailers can confirm authenticity in seconds, directly from the certificate or QR code.

Brand Licensing

Authorised jewellers and retailers can apply to issue GRA-certified reports under a licensed partnership. Our portal provides a complete workflow for certificate creation, management, and delivery.

Digital Certificates

Professional PDF certificates formatted for both digital delivery and double-sided print. Designed to accompany every piece of moissanite jewellery sold across Europe.

Vendor Portal

A dedicated portal for authorised vendors to create and manage certificates, upload stone data via CSV, track report history, and handle police reports for stolen stones.

Quality Standards

GRA grading scales are aligned with internationally recognised gemological standards, ensuring that GRA reports are understood and respected by jewellers and consumers worldwide.

Why GRA

Why Choose a GRA Report

  • 1
    EU Trademark Protection
    GRA is a registered EU trademark. Reports bearing the GRA name are legally protected and cannot be counterfeited without risk of trademark infringement proceedings.
  • 2
    Independent Assessment
    GRA reports are issued independently of the vendor or retailer, ensuring an unbiased evaluation of each stone's characteristics.
  • 3
    Instant Online Verification
    Every report is verifiable in real time at Check.GRAcert.eu. Consumers can scan the QR code on the certificate to confirm authenticity instantly.
  • 4
    Theft Protection
    GRA report IDs can be flagged in the event of theft, allowing law enforcement and jewellers to identify stolen stones across the network.
EU®
Registered Trademark (EUIPO)
100%
Online Verifiable Reports
7+
Grading Criteria per Stone
Lab
Grown Moissanite Specialists

Verify a GRA Certificate

Enter a GRA Report Number to instantly confirm the authenticity of a certificate.