International Gemological Institute
The trade uses IGI for grading reports on natural and laboratory-grown diamonds, coloured stones and finished jewellery, and for its gemmology schools.
Rekorden
Hvad det dækker
De rapporter, som organisationen udgiver
Navngivet således, som laboratoriet selv angiver det på sin egen hjemmeside. Rapportens indhold og ordlyd fastlægges af laboratoriet, ikke af os.
- Natural Diamond Report
- Colored Stone Report
- Jewelry Report
Godt at vide
IGI lists four global head offices, in Antwerp, New York, Mumbai and Shanghai, and does not designate one as a single headquarters. Country of origin appears on the Colored Stone Report only where analysis conclusively reveals it. IGI announced on 31 January 2026 that it had acquired American Gemological Laboratories.
Samlet fra igi.org, læs mere på 16. august 2026.
Vi kontrollerer forhandlere, ikke ædelstene. En laboratorierapport beskriver en bestemt ædelsten på en bestemt dato; den udgør ikke en værdigaranti, og det er ikke vores ansvar at stå inde for den.