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Gemological Laboratories
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Kim Jewels Link Partner
Specializing in customizable sterling silver and gemstone jewelry at affordable prices.
http://www.kimsjewels.com/
European Gemological
Provides diamond, colored stone and pearls certification, analysis and consultations.
http://www.eglusa.com/
Gemological Institute of America
The world’s largest and most respected nonprofit institute of gemological research and learning.
http://www.gia.edu
International Gemological Institute
The world's largest independent gem certification and appraisal institute and is renowned for its quality services, extensive experience and know-how.
http://www.igi-usa.com/