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International Diamond Grading Laboratories

AGL (American Gemological laboratories, Inc)
Founded in 1977. Tend to specialise in colored diamonds and gems. Reports and verifications
580 Fifth Ave. Suite 706, New York, NY 10036
Tel: (212) 704-0727, Fax (212) 764-7614, email: aglgemlab@aol.com

AIGS (Asian Institute of Gemological Sciences)
Jewelry Trade Center, 6th Floor, 919 Silom Rd
Bangkok 10500, Thailand
Website: AIGS
Tel: (662) 267-4325/7, Fax: (662) 267-4327

AGSL (American Gem Society Laboratories)
These are for the Trade only
8917 W. Sahara Ave., Las Vegas, NV 89117
Website: AGSL
Tel: (702) 255-6500, Fax: (702) 255-7420

CCIP Gemological laboratory (Chambre de commerce et d'Industrie de Paris Laboratory)
Also known as the French Gemological Laboratory
2 Place de la Bourse, 75002 Paris France
Website: CCIP
Tel: (33) 1-40-262545, Fax: (33) 1-40260675

CGL (central Gem Laboratory)
Miyagi building, 5-15-14 Ueno Taito-ku
Tokyo 110-0005, Japan
Website: CGL
Tel: (81) 3 3836-1627, Fax: (81) 3 3836-6861

DEL (Deutch Diamant und Edelsteinlaboratorien Indar-Oberstein)
(German Diamond & Gemstone Laboratories Idar-Oberstein)
Mainzer Str. 34, D-55743 Idar-Oberstein, Germany
Website: DEL
Te;: (49) 6781-981355, Fax (49) 6781-981357

EGL (European Gemological laboratory)
Website:EGL
They have branches in most major diamond capitals including, Antwerp, Johannesburg, Istanbul, London, Tel Aviv and Seoul.

Also there is the EGL USA Group at 6 West 48th Street in New York, NY 10036
Their Tel; (212) 730-7380. Fax: (212) 730-7453
Website: EGL USA
They were founded in 1986 and are independent of the EGL labs in Europe
They have branches in Los Angeles, Vancouver and Toronto also.

GCAL (Gem Certification & Appraisal Lab)
580 Fifth Ave, Lower Lobby
New York, NY 10036
Website: GCAL
Tel: (212) 869-8985. Fax: (212) 869-2315

Gem A (Gemmological Association & Gem Testing Laboratory of Great Britain)
This one was founded way back in 1925 and is for the trade only
27 Greville Street, London, EC1N 8TN, UK
Website: Gem A
Tel: 44-207 404-3334, Fax: 44-207 404-8843

GIA Gem Trade Laboratories Inc
Founded in 1949 and also for trade only
5355 Armada Drive, Carlsbad. CA 92008
Tel: (800) 421-7250 & (760) 603-4500
Also: 580 Fifth Ave., New York, NY 1003.
Tel: (212) 221-5858
Website: GIA

GGL (Gubelin Gem Lab Ltd)
Maihofstrasse 102, CH-6000 Lucerne 9 / Switzerland
Website: GGL
Tel: 41 41-429-1717, Fax: 41 41-429-1734

GIT (Gem & Jewelry Institute of Thailand
Chulalongkorn University, Phayathai University
Phayathai Road, Patumwan,
Bangkok 10330 Thailand
Website: GIT
Tel: (662) 218-5470-4, Fax (662) 218-5474

HRD (Hoge Raad vorr Diamant)
The Belgium HRD was founded in 1976. They also have offices in Hong Kong, The US, The Middle East, Italy and Spain.
Hoveniersraat, 22, B-2018 Antwerp, Belgium
Website: HRD
Tel: (32) 3-222-06-31, Fax (32) 3-222-06-05

IGI (International Gemological Institute)
The IGI was founded in Antwerp in 1975 and is one of the most well known internationally.
There are branches in most of the major diamond capitals including, Bangkok, Dubai, Los Angeles, Mumbai, Seoul, Tel Aviv, Tokyo and Toronto
US address is: 589 Fifth Avenue, New York, NY 10017.
Website: IGI
Tel: (212) 753-7100, Fax (212) 753-7759

PGS (Professional Gem Sciences)
Founded in 1980
5 South Wabash, Suite 1905, Chicago IL. 60603
Website: PGS
Tel: (312) 920-1541, (888) 292-1888, Fax (312) 920-1547

SSEF ( Swiss Foundation for the Research of Gemstones)
Founded in 1974)
Falknerstraase 9, CH-4001, Basel, Switzerland
Website: SSEF
Tel: (41) 61-262-0640, Fax (41) 61-262-0641

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