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Diamond Analysis & Certification
Every GLISORA diamond is analysed and certified by an independent gemological laboratory. The report is your objective, verifiable record of the stone's identity and quality.
A grading report — sometimes called a certificate — is prepared by trained gemologists using calibrated instruments, independent of any seller. It removes guesswork and gives you confidence in exactly what you are buying.
The laboratories we trust
GIA
The Gemological Institute of America — creators of the Four C's and the world's most respected diamond authority.
IGI
The International Gemological Institute — a global leader, widely used for grading both natural and lab-grown diamonds.
What a report tells you
Identity & origin
Whether the stone is natural or laboratory-grown, stated plainly.
The Four C's
Precise cut, colour, clarity and carat grades.
Proportions
A diagram of the stone's measurements, symmetry and polish.
Inscription
Many stones carry a microscopic report number, laser-inscribed on the girdle for verification.
“If a diamond cannot be independently verified, it cannot be trusted. We provide the full grading report with every certified stone.”
Made to Order
Begin your jewellery enquiry with our concierge
Every piece is created to order. Share your inspiration and our atelier will guide you from first sketch to finished heirloom — personally, over WhatsApp.