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GRS Gemresearch Swisslab LTD.
P.O. Box 4028, Hirschmattstr. 6, 6002 Lucerne, SWITZERLAND
Public limited company of Canton of Lucerne, Switzerland
Director: Dr. A. Peretti, FGG, FGA (Gemmologist)
Phone: 41 (41) 210-31-31
Phone: 41 (79) 410-96-74
Fax: 41 (41) 210-31-34
E-mail: Adolf@Peretti.ch

GRS Thailand Co., LTD.
Jewelry Trade Center, Room 919/257, 20^th Floor, North Tower
Silom Road, Bangrak, Bangkok 10500, Thailand
Phone: (66+2) 237-5898
Fax: (66+2) 237-5899

GRS Hotline: +66 9 0888866

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© GRS Gemresearch Swisslab, Lucerne, Switzerland, 2004