Independent Certification
Graded by an internationally recognised gemological laboratory.
The Goodwill of the House
IGI Certified Diamonds
At Carbon, trust is as important as brilliance. Every diamond is selected with uncompromising attention to quality and backed by internationally recognised certification, so you know exactly what you are choosing.
Our diamonds are certified by the International Gemological Institute (IGI), one of the world’s leading independent gemological laboratories.
Each certified diamond is independently assessed for its defining characteristics, including cut, colour, clarity and carat weight, providing complete transparency into its quality and specifications.
Your Diamond. Your Certificate.
Every IGI-certified diamond is accompanied by its unique grading report, allowing its specifications and certification details to be independently verified.
Complete Transparency
Clear documentation of your diamond’s characteristics and specifications.
Verified Identity
Certification details allow you to match and verify your diamond against its grading report.
Confidence for a Lifetime
Because a Carbon jewel should come with more than beauty. It should come with certainty.
International Gemological Institute, IGI, established 1975
The Carbon Standard
Exceptional design deserves exceptional assurance.
- Certified. Transparent. Uncompromised.
Speak to a Carbon advisor
For certificates, hallmarks or the terms of your piece, our team will walk you through every detail.