American Gem Society Laboratories
S917 W.Sahara Ave
Las Vegas 89117
USA
Phone: +1 702 233 6120
Fax: +1 702 233 6125
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Diamond Dealers Club
580 Fifth Avenue at 11 W47th Street
New York, NY 10036
USA
Phone: +1 212 869 9777
Fax: +1 212 869 5164
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EGL USA
6 West 48 th Street , Third Floor
New York , NY 10036
U.S.A.
Phone: +1 212 730 7380
Fax: +1 212 730 7453
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R Steinmetz & Sons
Suite 417, 580 5th Avenue
New York , NY 10036
U.S.A.
Phone: +1 212 398 1399
Fax: +1 212 302 2613
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