International Organizations
and Gem Trade Laboratories
ADGL - Australian Diamond Grading Laboratory
www.adgl.com.au
AGL - American Gemological Laboratories
www.aglgemlab.com
AGS - America Gemological Society
www.americangemsociety.org
AGSL - American Gem Society Laboratories
www.agslab.com
AGTA - American Gem Trade Association
www.agta.org
AIGS - Asian Institute of Gemological Sciences
www.aigsthailand.com
AWDC - Antwerp World Diamond Centre
www.awdc.be
BG - Gemmological Institute (BGGI), Beijing P.R. China
www.bggi.org
BGI - British Gemmological Institute
www.bgiuk.com
BJA - The British Jewellers' Association
www.bja.org.uk
CGL - Central Gem Laboratory, Japan
www.cgl.co.jp
CIBJO - The World Jewellery Confederation
www.cibjo.org
CISGEM - Centre for Information and Services in Gemmology
www.cisgem.it
DCLA - Diamond Certification Laboratory of Australia
www.dcla.com.au
DEL - German Diamond & Gemstone Laboratories Idar-Oberstein
www.gemcertificate.com
DGC - The Dubai Gem Club
www.dgc.ae
DGemG - German Gemmological Association
www.dgemg.com
EGL - European Gemological Laboratory
www.egl.co.za
EGL-USA - European Gemological Laboratory USA
www.eglusa.com
GAAJ - Gemmological Association of All Japan Co., Ltd.
www.gaaj-zenhokyo.co.jp
Gem Scan International - Canada
www.gemscan.com
Gem-A - The Gemmological Association of Great Britain
www.gem-a.info
GIA - Gemological Institute of America World Headquarters
www.gia.edu
GII - Gemmological Institute of India
www.giionline.com
GIT - Gem & Jewellery Institute of Thailand
www.git.or.th
Gubelin Gem Lab Ltd.
www.gubelinlab.com
HKJMA - Hong Kong Jewelry Manufacturers' Association
www.jewelry.org.hk
HRD Antwerp - Institute of Gemmology
www.hrdantwerp.be
IBGM - Brazilian Gems and Jewellery Trade Association
www.ibgm.com.br
ICA - International Colored Gemstone Association
www.gemstone.org
IDC - International Diamond Council
www.internationaldiamondcouncil.org
IDL - International Diamond Laboratories
www.diamondlab.org
IDMA - International Diamond Manufacturers Association
www.idma.net
IGE - Instituto Gemologico Espanol
www.ige.org
IGI - International Gemological Institute
www.igiworldwide.com
Langerman Diamonds
www.langerman-diamonds.com
LFG - Laboratoire Français de Gemmologie
www.diamants.ccip.fr
NAG - The National Association of Goldsmiths
www.jewellers-online.org
NCDIA - Natural Color Diamond Association
www.ncdia.com
NEL - Nederlands Edelsteen Laboratorium
www.science.naturalis.nl/nel
O.GEM.G - Österreichische Gemmologische Gesellschaft
www.gemmologie.at
PGS - Professional Gem Science Inc.
www.progem.com
RAPAPORT
www.rapnet.com
SGL - Solitaire Gemmological Laboratories
www.solitaire-labs.com
SSEF - Swiss Gemmological Institute
www.ssef.ch
WDC - World Diamond Council
www.worlddiamondcouncil.com
WGI - The World Gemological Institute
www.worldgemology.org
