| LGF |
French gemmological laboratory - www.diamants.ccip.fr
(Public Service for the control of diamonds)
2 Place de la Bourse
75002 Paris
Tél : +33 (0)1 40 26 25 45 |
| IGI |
International Gemological Institute - www.igiworldwide.com |
HRD
|
Hoge Raad voor Diamant - www.hrd.be
(Diamond High Council) |
| GIA |
Gemological Institute of America - www.gia.edu |
| AGS |
American Gem Society - www.ags.org |
