| Diamond Industry Directory |
| Gemological Laboratories |
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There are 51 listings in this category.
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AGT Gem Laboratory 
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Okachimachi CY Building, 2nd Floor, 5-14-14 Ueno, Taito-ku,
Tokyo,
Japan
Telephone: [81] 338348586
Fax: [81] 338348589
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All types of Gemology. AGT GEM LABORATORY in agreement with the GIA, gives the GIA courses in Japan. Diamond grading, and colored stone grading.
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AGTA Gemological Testing Center
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18 East 48th Street, Suite 1002,
10017, New York,
New York,
United States
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The American Gem Trade Association Gemological Testing Center (AGTA GTC) is the natural colored gemstone industry's premier independent laboratory. The AGTA GTC serves the industry and the public with a comp ...
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American Gem Society Laboratories 
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8881 W. Sahara Avenue,
89117, Las Vegas,
Nevada,
United States
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The AGS lab supplies the trade and the consumer with the Diamond Quality Document, the Diamond Quality Report, and a small basic report called the Diamond Consultaion. The Diamond Quality Document ads to the traditional ...
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American Gemological Laboratories (AGL)
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Gem Science Conference Center, 580 Fifth Ave, Suite 706,
10036, New York,
New York,
United States
Telephone: 212 704-0727
Fax: 212-764-7614
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The American Gemological Laboratories is an independent organization which grades colored stones and diamonds.
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Asian Gemological Institute & Laboratory
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7th Floor, 11 Lock Road,
Tsimshatsui, Kowloon,
Hong Kong
Telephone: 1-852-272-30429
Fax: 1-852-236-75201
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Gem Identification, gem testing, full laboratory. Test done to international gemological standards. Diamond color treatment detection available.
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Central Gem Laboratory
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Miyagi Building, 5-15-14 Ueno, Taito-ku,
110-0005, Tokyo,
Japan
Telephone: [81] 38363219
Fax: [81] 38326861
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Diamond grading and gem identification, also has diamond museum. Diamond Cut grading standards based on AGL (Asian Gemological Laboratories Statndards, not to be confused with the AGL in the U.S.. Full range of X-ray and ...
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CISGEM
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Centro Informazione e Servizi Gemmologici, Azienda Speciale della Camera di Commerc, Via della Orsole 4 - 20123,
Milano,
Italy
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CISGEM is the Public Service for the Regulation of Gem Materials and Precious Metals. It was set up in 1966 by the Ministry of Industry as an office of the Milan Chamber of Commerce. Then in 1984, it was made an external ...
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Diamond Profile Laboratory
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Laboratory Premises, 10455 Olympic Drive,
75220, Dallas,
Texas,
United States
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Full Color Diamond Brilliance analysis, fancy shapes and round. The most comprehensive analysis on beauty today. This Lab uses photospectrometers to measure dispersion, A light box to determine loss of brilliance a ...
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EGL USA - Los Angeles
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550 South Hill Suite 840,
90013, Los Angeles,
California,
United States
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EGL USA is one of the world's premier independent ...
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