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5345 Armada Drive
Carlsbad, California 92008
An independent nonprofit organization, GIA (Gemological Institute of America), established in 1931, is recognized as the world's foremost authority in gemology. GIA invented the famous 4Cs of Color, Clarity, Cut and Carat Weight in the early 1950s and in ... more
Kabul Medical University
Hacettepe University, Institute of Public Health