Gemological Laboratory & Jewelry Appraisal Services for Consumers, Law Enforecement Agencies, Banks, Insurance Companies, & Retailers

http://www.aiglabs.com

The Asian Institute of Gemological Sciences was founded in 1978 as Southeast Asia's first educational and research institute devoted exclusively to the training of students in the scientific and practical aspects of gemology and the gem trade.

http://www.aigsthailand.com

EGL/Tel Aviv is part of a worldwide network of gemological laboratories (Antwerp, Istanbul, Johannesburg, Los Angeles, London, New York, Paris, Ramat Gan, and Seoul), offering certificates, courses, and the new diamond

http://www.diamond-key.com/egl

The definitive, illustrated guide to Clarity Grading. A must-have for anyone interested in learning about grading the clarity of Diamonds.

http://www.diamondring.com/link.php?id=0964173301

EGL USA is world’s most trusted gemological laboratories. EGL USA offers a range of gemological services and certificates, including pre-grading of gemstones and diamond, pearl, colored stone & finished jewelry certificates.

http://www.eglusa.com

The Gemmological Association and Gem Testing Laboratory of Great Britain GAGTL 27 Greville Street (Saffron Hill Entrance) London EC1N 8SU UK,27 Greville Street (Saffron Hill Entrance),London,NON-US,England,+44 (0) 171 404 3334,ECIN 8SU

http://www.gagtl.ac.uk

North American Lapidary Laboratory provides gem artists, lapidaries, gem dealers, jewelers, appraisers, insurers, the courts, and consumers an accurate, in depth, easy to understand, third party analysis of gems and gem art. The Laboratory issues gem identification reports, grading reports on diamonds, pearls, and standard faceted colored gemstones, and gem art. North American Lapidary Laboratory offers consultation, appraisal, expert witness, lecture, and educational services and is available to provide guidance to anyone issuing appraisals on Gem Art.

http://www.gemartlab.com

Gemological Institute of America

http://www.gia.edu

A-1010 Vienna/Austria/Europe Habsburgergasse 10

http://www.gla.at

Global Gem Lab

http://www.globalgemlab.com

HWL, Canadas most experienced independent gemmological laboratory, was founded in 1977 to serve the jewellery trade, the jewellery buying public, the legal profession, the insurance industry , banks and government agencies.,Canada,Canada,NON-US,Canada,41

http://www.hwgem.com

Diamond & Colored Stone Reports/ Jewelry Identification & Appraisal Reports/ Gemological Training courses / Diamond Repair

http://www.igi-usa.com

PGS is a full service gemological laboratory, offering independant, quality reports on diamonds and color gemstones, whether loose or mounted in jewelry.

http://www.progem.com

This site features the gemological writings of Richard Hughes, author of Ruby & Sapphire. This book can also be purchased online. Article topics include diamond grading, Burmas jade mines, Burmas ruby mines, emerald enhancements, ruby enhancements, etc.

http://www.ruby-sapphire.com

The World Gemmological Laboratory is becoming one of the premier grading laboratories for diamonds, jewelry and colored gemstones. Founded to protect buyers from inaccurate Diamond and Jewelry grading reports, our mission is to provide full grading disclosure so buying and selling is as safe as possible.

http://www.worldgemlab.com