Why Certification Matters
Certification is the foundation of trust in fine jewellery. It’s your assurance that the diamond or moissanite you receive meets the highest standards of quality and origin.
Each certified diamond is graded by an independent gemological laboratory using internationally recognised criteria:
Cut, Colour, Clarity, and Carat Weight, the “4Cs” that define brilliance and value.
This ensures that what you see on paper perfectly matches the gem set in your ring.
Unlike uncertified stones, certified gems come with a unique report number that allows you to verify your diamond’s authenticity online anytime.
Our Certification Partners (IGI & GIA)
At Diamond Lab, we exclusively source lab-grown diamonds certified by IGI or GIA — two of the world’s most respected gemological institutions.
IGI (International Gemological Institute)
Renowned for its expertise in grading lab-grown diamonds, IGI provides full grading reports detailing every measurable aspect of the stone, including polish, symmetry, fluorescence, and more.
GIA (Gemological Institute of America)
The gold standard in diamond grading. GIA’s rigorous testing ensures each lab diamond is accurately classified and laser-inscribed with its report number for lifetime traceability.
Every Diamond Lab certified diamond is accompanied by a digital or printed certificate that can be verified through the IGI or GIA online database.
Moissanite Authenticity & Grading
Our moissanite stones are D colour, VVS1 clarity, and are individually examined for optical perfection.
While moissanite is not certified by IGI or GIA (since it is a distinct gemstone, not a diamond), each one comes with a Diamond Lab Certificate of Authenticity, confirming its grade, cut, and ethical origin.
This internal verification process ensures that every moissanite you receive delivers the same brilliance, fire, and durability that Diamond Lab is known for.
Diamond Lab’s In-House Verification Process
Beyond third-party certification, every diamond and moissanite undergoes additional quality checks by our gemologist team in Australia before being set into your jewellery.
Our process includes:
- Optical inspection under high-magnification conditions
- Measurement verification to ensure stone dimensions match the certificate
- Clarity and inclusion analysis to confirm natural growth features for lab diamonds
- Verification of inscription and report number using a jeweller’s microscope
Only once all criteria are met does the stone move to our jewellers for setting and final polishing.
How to Read Your Certificate
Each certificate includes:
- Report Number and Verification Link
- Cut, Colour, Clarity, and Carat Weight
- Growth Type (CVD or HPHT for lab diamonds)
- Measurements and Proportions
- Laser Inscription Number
- Polishing, Symmetry, and Fluorescence Details
You can verify your certificate anytime by visiting:
Your Diamond Lab invoice will always match the certificate details for complete transparency.
Authenticity Guarantee & Lifetime Assurance
Every Diamond Lab piece is covered by our Lifetime Authenticity Guarantee — meaning your gemstone is genuine, conflict-free, and graded to exact standards.
We guarantee:
- 100% certified lab-grown diamonds or verified D/VVS1 moissanites
- No simulants, imitations, or recycled stones
- Ethically sourced materials, handcrafted in Australia
- Lifetime support for verification and re-inspection
Should you ever need re-authentication or a reprint of your certificate, our gemologist team will assist at no cost.
Frequently Asked Questions
Do all lab diamonds come with a certificate?
Yes. Every lab diamond from Diamond Lab is certified by IGI or GIA, with a unique report number that can be verified online.
Can I see the certificate before purchase?
Absolutely. We provide your chosen diamond’s certificate details during the selection process so you can verify the report before finalising your order.
Is moissanite certified as well?
Moissanite stones are accompanied by a Diamond Lab Certificate of Authenticity, confirming their quality grade (D colour, VVS1 clarity) and ethical sourcing.
How do I verify my certificate online?
Visit the IGI or GIA official websites and enter your certificate number. For moissanite, contact our gemologist team for verification assistance.
Are Diamond Lab’s stones insured during shipping?
Yes. Every order is fully insured from our workshop to your delivery address for peace of mind and guaranteed authenticity.
Final Note
At Diamond Lab, certification isn’t a formality — it’s a promise.
Every sparkle you see is backed by truth, transparency, and expert verification.
Because your forever piece deserves nothing less than complete authenticity.
