10 years, 23 countries on 5 continents, 9 countries in Europe, 18 states in USA, 48 provinces in VN 10 years, 23 countries on 5 continents, 9 countries in Europe, 18 states in USA, 48 provinces in VN

Jewelry Education

AGS - American Gem Society

AGS - American Gem Society
American Gem Society – AGS was founded in 1934 by Sir Robert M. Shipley, Founder of GIA - the Gemological Institute of America, and a group of leading jewelers. The AGS Laboratory offers the world's most prestigious diamond test papers. Continue reading
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